Plasma Physics and Controlled Fusion最新文献

{"title":"Experimental study on plasma characteristics in the extraction region of a high-power RF negative ion source based on electrostatic probe","authors":"Xufeng Peng, Yongjian Xu, Yahong Xie, Jianglong Wei, Yufan Li, Yuwen Yang, Bo Liu, Junwei Xie, Bin Wu","doi":"10.1088/1361-6587/ad705b","DOIUrl":"https://doi.org/10.1088/1361-6587/ad705b","url":null,"abstract":"The plasma characteristics of the extraction region in high-power RF negative ion source have a significant impact on the production and extraction of negative hydrogen ions. This study utilized electrostatic probe to investigate the effect of RF power, source pressure, magnetic filter field and bias voltage on the plasma parameters of the extraction region (without cesium), and also studied the variation of plasma parameters with position and time. The results indicate that as RF power increases, the plasma density in the extraction region significantly rises, but it also leads to an increase in the electron temperature (<inline-formula>\u0000<tex-math><?CDATA ${T_{text{e}}}$?></tex-math><mml:math overflow=\"scroll\"><mml:mrow><mml:mrow><mml:msub><mml:mi>T</mml:mi><mml:mrow><mml:mtext>e</mml:mtext></mml:mrow></mml:msub></mml:mrow></mml:mrow></mml:math><inline-graphic xlink:href=\"ppcfad705bieqn1.gif\"></inline-graphic></inline-formula>) of the extraction region (which increases the loss of negative hydrogen ions); increasing the source pressure can effectively increase the electron density (<inline-formula>\u0000<tex-math><?CDATA ${N_{text{e}}}$?></tex-math><mml:math overflow=\"scroll\"><mml:mrow><mml:mrow><mml:msub><mml:mi>N</mml:mi><mml:mrow><mml:mtext>e</mml:mtext></mml:mrow></mml:msub></mml:mrow></mml:mrow></mml:math><inline-graphic xlink:href=\"ppcfad705bieqn2.gif\"></inline-graphic></inline-formula>) in the extraction region and reduce <inline-formula>\u0000<tex-math><?CDATA ${T_{text{e}}}$?></tex-math><mml:math overflow=\"scroll\"><mml:mrow><mml:mrow><mml:msub><mml:mi>T</mml:mi><mml:mrow><mml:mtext>e</mml:mtext></mml:mrow></mml:msub></mml:mrow></mml:mrow></mml:math><inline-graphic xlink:href=\"ppcfad705bieqn3.gif\"></inline-graphic></inline-formula> as expected; increasing the magnetic filter field can effectively reduce the <inline-formula>\u0000<tex-math><?CDATA ${T_{text{e}}}$?></tex-math><mml:math overflow=\"scroll\"><mml:mrow><mml:mrow><mml:msub><mml:mi>T</mml:mi><mml:mrow><mml:mtext>e</mml:mtext></mml:mrow></mml:msub></mml:mrow></mml:mrow></mml:math><inline-graphic xlink:href=\"ppcfad705bieqn4.gif\"></inline-graphic></inline-formula> in the extraction region, but after the plasma grid current exceeds 1900 A, the change in <inline-formula>\u0000<tex-math><?CDATA ${T_{text{e}}}$?></tex-math><mml:math overflow=\"scroll\"><mml:mrow><mml:mrow><mml:msub><mml:mi>T</mml:mi><mml:mrow><mml:mtext>e</mml:mtext></mml:mrow></mml:msub></mml:mrow></mml:mrow></mml:math><inline-graphic xlink:href=\"ppcfad705bieqn5.gif\"></inline-graphic></inline-formula> is not significant; although increasement of the bias voltage can effectively suppress the <inline-formula>\u0000<tex-math><?CDATA ${N_{text{e}}}$?></tex-math><mml:math overflow=\"scroll\"><mml:mrow><mml:mrow><mml:msub><mml:mi>N</mml:mi><mml:mrow><mml:mtext>e</mml:mtext></mml:mrow></mml:msub></mml:mrow></mml:mrow></mml:math><inline-graphic xlink:href=\"ppcfad705bieqn6.gif\"></inline-graphic></inline-formula> in the extraction region, it causes <inline-f","PeriodicalId":20239,"journal":{"name":"Plasma Physics and Controlled Fusion","volume":"17 1","pages":""},"PeriodicalIF":2.2,"publicationDate":"2024-09-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142181226","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Drift instabilities driven by slab ion temperature gradient in suprathermal plasmas","authors":"Ran Guo","doi":"10.1088/1361-6587/ad7319","DOIUrl":"https://doi.org/10.1088/1361-6587/ad7319","url":null,"abstract":"The drift instabilities driven by the slab ion temperature gradient (ITG) in Kappa-distributed plasmas are investigated by the kinetic method. The linear dispersion relation is given in an integral representation involving only the standard plasma dispersion function. The wave frequency and growth rate are derived without the density inhomogeneity. Numerical solutions of the dispersion equation are conducted to show the different effects of the suprathermal ions and electrons. We find that the suprathermal ions can enhance the instability in large wavenumbers but suppress it in small wavenumbers. Thus, the suprathermalization of ions could be one of the factors leading to a lower limit of wavenumbers for the ITG instabilities. Besides, the numerical calculations also imply that the thermal speed ratio affects the intensities of the suprathermal effects. Finally, in the presence of density inhomogeneity, the ITG instability boundary is numerically analyzed.","PeriodicalId":20239,"journal":{"name":"Plasma Physics and Controlled Fusion","volume":"49 1","pages":""},"PeriodicalIF":2.2,"publicationDate":"2024-09-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142181227","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Design concept of intelligent integrated control system for neutral beam injection","authors":"Yu Gu, Chundong Hu, Yang Li, Yuanzhe Zhao, Qinglong Cui, Yahong Xie","doi":"10.1088/1361-6587/ad731a","DOIUrl":"https://doi.org/10.1088/1361-6587/ad731a","url":null,"abstract":"Due to the specificity of neutral beam injection (NBI) system, the control of its actual physical system is achieved by the integrated control system (ICS). The current NBI ICS adopts a distributed design structure to balance the system load, which is also the mainstream system design and architecture model of ICS around the world. However, from a practical point of view, the distributed system architecture is not perfect. In the long run, upgrading the system intelligence and automation capabilities is an inevitable choice for the future, so it is necessary to explore ways to transform and upgrade the ICS. At present, Internet of Things (IoT), as an important part of the new generation information technology, can realize the control of everything through data exchange. This is because on the one hand, IoT has wide compatibility and powerful scenario-based capabilities, it not only has the advantages and characteristics of distributed design, but also can pull the NBI subsystems into the same level scenario and lay the foundation for the further construction of digital NBI; on the other hand, the intervention of artificial intelligence makes IoT have some new typical characteristics such as intelligent sensing, ubiquitous connectivity, precise control, digital modeling, real-time analysis and iterative optimization, which is enough to pull the current NBI ICS into a new intelligent control era. Finally, it is worth mentioning that due to its inherent design structure and functional characteristics, ICS tends to be broadly generic, so it is not exclusively used for NBI operation in nuclear fusion, and it can provide some insight into other application areas.","PeriodicalId":20239,"journal":{"name":"Plasma Physics and Controlled Fusion","volume":"21 1","pages":""},"PeriodicalIF":2.2,"publicationDate":"2024-09-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142181228","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Finite orbit width effects on turbulent transport of ion parallel momentum","authors":"Yang Li","doi":"10.1088/1361-6587/ad7318","DOIUrl":"https://doi.org/10.1088/1361-6587/ad7318","url":null,"abstract":"A kinetic model for ion turbulent parallel momentum transport is developed with finite orbit width effects for Tokamak plasmas. It is shown that the curvature and gradient drifts of ions can introduce pressure perturbations into the transport equation of ion parallel momentum, which leads to a new source term. And the source term can be understood as a Coriolis force and can play a key role in the toroidal symmetry breaking during the spontaneous spin-up process.","PeriodicalId":20239,"journal":{"name":"Plasma Physics and Controlled Fusion","volume":"30 1","pages":""},"PeriodicalIF":2.2,"publicationDate":"2024-09-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142181229","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Implementation of matrix compression in the coupling of JOREK to realistic 3D conducting wall structures","authors":"F Cipolletta, N Schwarz, M Hoelzl, S Ventre, N Isernia, G Rubinacci, A Soba, M J Mantsinen, the JOREK Team7","doi":"10.1088/1361-6587/ad728a","DOIUrl":"https://doi.org/10.1088/1361-6587/ad728a","url":null,"abstract":"JOREK is an advanced non-linear simulation code for studying MHD instabilities in magnetically confined fusion plasmas and their control and/or mitigation. A free-boundary and resistive wall extension was introduced via coupling to the STARWALL and CARIDDI codes, both able to provide dense response matrices describing the electromagnetic interactions between plasma and conducting structures. For detailed CAD representations of the conducting structures and high resolutions for the plasma region, memory and computing time limitations restrict the possibility of simulating the ITER tokamak. In the present work, the Singular Value Decomposition provided by routines from the ScaLAPACK library has been successfully applied to compress some of the dense response matrices and thus optimize memory usage. This is demonstrated for simulations of Tearing Mode and Vertical Displacement Event instabilities. An outlook to future applications on large production cases and further extensions of the method are discussed.","PeriodicalId":20239,"journal":{"name":"Plasma Physics and Controlled Fusion","volume":"54 1","pages":""},"PeriodicalIF":2.2,"publicationDate":"2024-09-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142181230","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Turbulent relaxation patterns in SOL plasma","authors":"R Varennes, G Dif-Pradalier, P Ghendrih, V Grandgirard, O Panico, Y Sarazin, E Serre, D Zarzoso","doi":"10.1088/1361-6587/ad705c","DOIUrl":"https://doi.org/10.1088/1361-6587/ad705c","url":null,"abstract":"Relaxations of localized over-density in a plane transverse to the magnetic field are numerically investigated under the effect of drift-wave and interchange drives in SOL conditions. Such a controlled departure from thermodynamic equilibrium allows the investigation of fundamental processes at play in cross-field transport. Interchange instabilities generate ballistic outward radial flux with low amplitude zonal flow patterns, whereas drift-wave instabilities result in symmetric radial flux with large amplitude zonal flow patterns. When both instabilities are considered, the combined effects tend to favor drift-waves, leading to a weaker outward flux with larger zonal flow patterns.","PeriodicalId":20239,"journal":{"name":"Plasma Physics and Controlled Fusion","volume":"17 1","pages":""},"PeriodicalIF":2.2,"publicationDate":"2024-08-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142181231","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Accuracy and scalability of incompressible inductionless MHD codes applied to fusion technologies","authors":"Fernando R Urgorri, Guillermo G Fonfría, Francesc Verdugo, Javier Príncipe, Santiago Badia","doi":"10.1088/1361-6587/ad6a82","DOIUrl":"https://doi.org/10.1088/1361-6587/ad6a82","url":null,"abstract":"It is well-known that magnetohydrodynamics (MHD) dominates the dynamic of the liquid metal flows inside the breeding blankets (BB) of future nuclear fusion plants by magnetic confinement. MHD is a multiphysics phenomenon involving both electromagnetism and incompressible fluid mechanics. From the computational point of view, the simulation of MHD flows in fusion relevant conditions entails a significant challenge. Indeed, due to the shape of the induced electrical currents inside the bulk of the fluid, high spatial resolutions are needed to capture the large gradients found in boundary layers and 3D effects. Besides, solving the equations accurately typically requires very small time steps for the transient algorithms. Over the past few decades, some parallel MHD codes have been developed with success to simulate complex flows in increasingly realistic geometries. Among them, the MHD tools of commercial CFD platforms have attracted attention due to their relatively soft learning curve. Most of these codes are based on the so called <italic toggle=\"yes\">ϕ</italic>-formulation which, by applying the divergence free condition of the current density to the Ohms law, reduces the electromagnetic part of the problem to a single Poisson equation. As a downside, the approach segregates the fluid and electromagnetic problem. In practice, this establishes important limits to the mesh element size, to the mesh quality and to the time-step needed to obtain accurate and stable solutions that maintains charge conservation at a discrete level. In this work, these limits are explored for the commercial platform ANSYS-Fluent using a test geometry under different conditions. As an alternative, a new code based on Finite Element Methods (FEM) is introduced as well. This open-source code, called GridapMHD (<ext-link ext-link-type=\"uri\" xlink:href=\"https://github.com/gridapapps/GridapMHD.jl\">https://github.com/gridapapps/GridapMHD.jl</ext-link>), aims at solving the full set of MHD equations using a monolithic approach. GridapMHD is still in early stages of development but it has already shown promising results.","PeriodicalId":20239,"journal":{"name":"Plasma Physics and Controlled Fusion","volume":"14 1","pages":""},"PeriodicalIF":2.2,"publicationDate":"2024-08-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142227518","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Machine learning aided line intensity ratio method for helium–hydrogen mixed recombining plasmas","authors":"Shin Kajita, Daisuke Nishijima, Keisuke Fujii, Hirohiko Tanaka, Jordy Vernimmen, Hennie van der Meiden, Ivo Classen, Noriyasu Ohno","doi":"10.1088/1361-6587/ad6a81","DOIUrl":"https://doi.org/10.1088/1361-6587/ad6a81","url":null,"abstract":"The helium line intensity ratio (LIR) with the help of a collisional radiative (CR) model has long been used to measure the electron density, <inline-formula>\u0000<tex-math><?CDATA $n_textrm{e}$?></tex-math><mml:math overflow=\"scroll\"><mml:mrow><mml:msub><mml:mi>n</mml:mi><mml:mtext>e</mml:mtext></mml:msub></mml:mrow></mml:math><inline-graphic xlink:href=\"ppcfad6a81ieqn1.gif\"></inline-graphic></inline-formula>, and temperature, <inline-formula>\u0000<tex-math><?CDATA $T_textrm{e}$?></tex-math><mml:math overflow=\"scroll\"><mml:mrow><mml:msub><mml:mi>T</mml:mi><mml:mtext>e</mml:mtext></mml:msub></mml:mrow></mml:math><inline-graphic xlink:href=\"ppcfad6a81ieqn2.gif\"></inline-graphic></inline-formula>, and its potential and limitations for fusion applications have been discussed. However, it has been reported that the CR model approach leads to deviations in helium–hydrogen mixed plasmas and/or recombining plasmas. In this study, a machine learning (ML) aided LIR method is used to measure <inline-formula>\u0000<tex-math><?CDATA $n_textrm{e}$?></tex-math><mml:math overflow=\"scroll\"><mml:mrow><mml:msub><mml:mi>n</mml:mi><mml:mtext>e</mml:mtext></mml:msub></mml:mrow></mml:math><inline-graphic xlink:href=\"ppcfad6a81ieqn3.gif\"></inline-graphic></inline-formula> and <inline-formula>\u0000<tex-math><?CDATA $T_textrm{e}$?></tex-math><mml:math overflow=\"scroll\"><mml:mrow><mml:msub><mml:mi>T</mml:mi><mml:mtext>e</mml:mtext></mml:msub></mml:mrow></mml:math><inline-graphic xlink:href=\"ppcfad6a81ieqn4.gif\"></inline-graphic></inline-formula> from spectroscopic data of helium–hydrogen mixed recombining plasmas in the divertor simulator Magnum-PSI. To analyze mixed plasmas, which have more complex spectral shapes, the spectroscopy data were used directly for training instead of separating the intensities of each line. It is shown that the ML approach can provide a robust and simpler analysis method to deduce <inline-formula>\u0000<tex-math><?CDATA $n_textrm{e}$?></tex-math><mml:math overflow=\"scroll\"><mml:mrow><mml:msub><mml:mi>n</mml:mi><mml:mtext>e</mml:mtext></mml:msub></mml:mrow></mml:math><inline-graphic xlink:href=\"ppcfad6a81ieqn5.gif\"></inline-graphic></inline-formula> and <inline-formula>\u0000<tex-math><?CDATA $T_textrm{e}$?></tex-math><mml:math overflow=\"scroll\"><mml:mrow><mml:msub><mml:mi>T</mml:mi><mml:mtext>e</mml:mtext></mml:msub></mml:mrow></mml:math><inline-graphic xlink:href=\"ppcfad6a81ieqn6.gif\"></inline-graphic></inline-formula> from the visible emissions in helium–hydrogen mixed plasmas.","PeriodicalId":20239,"journal":{"name":"Plasma Physics and Controlled Fusion","volume":"41 1","pages":""},"PeriodicalIF":2.2,"publicationDate":"2024-08-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142223756","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Impurity transport in PISCES-RF*","authors":"G Dhamale, M J Baldwin, M S Islam, A Kumar, H M Meyer, D Nishijima, L Nuckols, M I Patino, W Tierens, G R Tynan, J Rapp","doi":"10.1088/1361-6587/ad6a85","DOIUrl":"https://doi.org/10.1088/1361-6587/ad6a85","url":null,"abstract":"Linear plasma devices (LPD) utilizing a helicon plasma source, a high density light ion source, can generate impurities due to progressive erosion of the radio frequency (RF) transmission window caused by rectified sheath voltage. These source-born impurities can entrain and be transported by the plasma toward a target, affecting plasma-material interaction studies. Earlier work on material testing in Prototype-Materials Plasma Exposure eXperiment at ORNL revealed significant source impurity deposition on downstream targets. However, using a similar RF source, no target impurity deposition is observed in Plasma Interaction Surface Component Experimental Station (PISCES)-RF despite evidence of RF window erosion in the source region, thereby motivating the present work. Experimentally, using various magnetic field configurations upstream of the PISCES-RF plasma source and seeding titanium (Ti) impurities at various axial locations, impurity transport and deposition along the machine axis were investigated. It was found that Ti deposition was localized to the side of the plasma source where the Ti impurity was seeded. In contrast, aluminum (Al) deposition, originating from the sputtering of the helicon window, occurred predominantly upstream of the plasma source, suggesting an asymmetry in the axial transport of eroded RF window material. These observations suggest a stagnation of the parallel plasma flow immediately downstream of the plasma source, with impurity ions remaining unmagnetized near the source upstream. Al deposition in magnetic field-free regions in PISCES-RF indicates that sputtered Al impurities likely remained neutral due to their large ionization mean-free path under PISCES-RF conditions. Plasma modeling and simulation supported this, indicating that Al-neutrals transport toward the helicon source upstream for low electron density cases. It was found that the Larmor radius of the Al ions was greater than the plasma radius towards the source upstream and remained weakly magnetized in PISCES-RF, meaning that plasma source-born impurities are not efficiently entrained in the plasma flow. These findings provide critical insights into impurity transport in helicon plasma-based LPDs.","PeriodicalId":20239,"journal":{"name":"Plasma Physics and Controlled Fusion","volume":"11 1","pages":""},"PeriodicalIF":2.2,"publicationDate":"2024-08-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142181246","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"State-selective electron capture in Ar 16++H (1s) collisions for charge-exchange recombination spectroscopy","authors":"A M Kotian, N W Antonio, O Marchuk, A S Kadyrov","doi":"10.1088/1361-6587/ad6a86","DOIUrl":"https://doi.org/10.1088/1361-6587/ad6a86","url":null,"abstract":"State-selective electron capture in collisions of Ar¹⁶⁺ ions with ground-state hydrogen atoms has been modeled using the two-center wave-packet convergent close-coupling approach. The partially stripped He-like projectile ion is represented using a model potential. Experimental measurements are not available for this collision system and to date, only the classical trajectory Monte Carlo (CTMC) method has been applied to calculate cross sections. The calculated total electron-capture cross section (TECS) is in good agreement with the previous CTMC results at the low energies but slightly larger at higher energies. This is likely because, in this work, we account for capture into highly excited states, which contribute significantly to the TECS at the intermediate energies. The <italic toggle=\"yes\">n</italic>-resolved electron-capture cross sections have also been presented for capture into states with <inline-formula>\u0000<tex-math><?CDATA $n = 6-19$?></tex-math><mml:math overflow=\"scroll\"><mml:mrow><mml:mi>n</mml:mi><mml:mo>=</mml:mo><mml:mn>6</mml:mn><mml:mo>−</mml:mo><mml:mn>19</mml:mn></mml:mrow></mml:math><inline-graphic xlink:href=\"ppcfad6a86ieqn3.gif\"></inline-graphic></inline-formula>, where <italic toggle=\"yes\">n</italic> is the final-state principal quantum number. The most important of these are the cross sections for capture into the <inline-formula>\u0000<tex-math><?CDATA $n = 14-17$?></tex-math><mml:math overflow=\"scroll\"><mml:mrow><mml:mi>n</mml:mi><mml:mo>=</mml:mo><mml:mn>14</mml:mn><mml:mo>−</mml:mo><mml:mn>17</mml:mn></mml:mrow></mml:math><inline-graphic xlink:href=\"ppcfad6a86ieqn4.gif\"></inline-graphic></inline-formula> states, which are used in charge-exchange recombination spectroscopy techniques. For these cross sections, a significant difference is observed between the present and previously published data. The cross sections differ by an order of magnitude in the 10−60 keV u⁻¹ energy range. The agreement between the calculations is observed at the energies above 70 keV u⁻¹. The <inline-formula>\u0000<tex-math><?CDATA $nell$?></tex-math><mml:math overflow=\"scroll\"><mml:mrow><mml:mi>n</mml:mi><mml:mi>ℓ</mml:mi></mml:mrow></mml:math><inline-graphic xlink:href=\"ppcfad6a86ieqn5.gif\"></inline-graphic></inline-formula>-resolved electron-capture cross sections have also been presented at 15, 60, 100 and 200 keV u⁻¹ projectile energies, where <inline-formula>\u0000<tex-math><?CDATA $ell$?></tex-math><mml:math overflow=\"scroll\"><mml:mrow><mml:mi>ℓ</mml:mi></mml:mrow></mml:math><inline-graphic xlink:href=\"ppcfad6a86ieqn6.gif\"></inline-graphic></inline-formula> is the final-state angular momentum quantum number.","PeriodicalId":20239,"journal":{"name":"Plasma Physics and Controlled Fusion","volume":"86 1","pages":""},"PeriodicalIF":2.2,"publicationDate":"2024-08-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142181247","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}