JETP Letters最新文献

Thermoelectric and Magnetic Properties of Polycrystalline Cu11TM1Sb4S13 (TM = Mn, Fe, Co, Ni) Compounds with the p-Type Conductivity 具有p型电导率的多晶Cu11TM1Sb4S13 （TM = Mn, Fe, Co, Ni）化合物的热电和磁性能

IF 1.1 4区物理与天体物理

JETP Letters Pub Date : 2026-10-18 DOI: 10.1134/S0021364026607438

E. V. Argunov, D. Yu. Karpenkov, A. Yu. Levakhova, A. Yu. Tsvetkov, K. A. Shcherbakova, E. V. Chernyshova, I. V. Andreev, O. A. Podchasov, A. V. Bogach, Yu. M. Kuznetsov, M. V. Dorokhin, A. V. Zdoroveishev

{"title":"Thermoelectric and Magnetic Properties of Polycrystalline Cu11TM1Sb4S13 (TM = Mn, Fe, Co, Ni) Compounds with the p-Type Conductivity","authors":"E. V. Argunov, D. Yu. Karpenkov, A. Yu. Levakhova, A. Yu. Tsvetkov, K. A. Shcherbakova, E. V. Chernyshova, I. V. Andreev, O. A. Podchasov, A. V. Bogach, Yu. M. Kuznetsov, M. V. Dorokhin, A. V. Zdoroveishev","doi":"10.1134/S0021364026607438","DOIUrl":"10.1134/S0021364026607438","url":null,"abstract":"In this work, for the first time, a comprehensive experimental and theoretical study was carried out on the influence of copper substitution with magnetically active metals TM = Mn, Fe, Co, Ni on the thermoelectric and magnetic properties of tetrahedrites of the composition Cu11TM1Sb4S13. Maximum value of thermoelectric figure of merit (z{{T}_{{max }}} = 1.34) at 735 K was achieved for the unalloyed sample. It was established that doping (3d)-metals leads to a decrease (zT) due to a decrease in electrical conductivity and an increase in thermal conductivity. Experimental data show that with decreasing charge number (3d)-ion, an increase in the magnetic moment at the substitution position is observed. However, for the entire series of compositions, no significant increase in magneto-thermoEMF was detected. The calculations carried out within the framework of the density functional theory qualitatively reproduce the experimental data and confirm that the contribution of spin entropy, magnon drag and other spin-caloritron mechanisms to the thermoelectric properties in tetrahedrites with substitutions 3d-metals is insignificant.","PeriodicalId":604,"journal":{"name":"JETP Letters","volume":"124 5","pages":"373 - 379"},"PeriodicalIF":1.1,"publicationDate":"2026-10-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149214597","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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}

引用次数: 0

Account for the Final State Interaction in Meson Production Processes 解释介子产生过程中的最终态相互作用

IF 1.1 4区物理与天体物理

JETP Letters Pub Date : 2026-10-18 DOI: 10.1134/S0021364026607505

M. N. Platonova, O. A. Rubtsova

{"title":"Account for the Final State Interaction in Meson Production Processes","authors":"M. N. Platonova, O. A. Rubtsova","doi":"10.1134/S0021364026607505","DOIUrl":"10.1134/S0021364026607505","url":null,"abstract":"A generalization of the Fäldt–Wilkin formalism, which relates the meson production cross sections with the emission of a deuteron to those with the emission of a nucleon pair in the final state, is proposed for higher excitation energies of the final pair of nucleons. To derive the relationship between the cross sections, a model of interaction with an additional non-nucleon channel is used, in which the relationship between the corresponding amplitudes is determined by the energy dependence of the non-nucleon component of the (NN)-system wavefunction. It is shown that the obtained cross section ratio is practically independent of the interaction model at excitation energies of the nucleon pair from 0 to 40–50 MeV. As an example, the ratios of total and differential cross sections of the reaction (pp to pn{{pi }^{ + }}) to the corresponding cross sections of (pp to d{{pi }^{ + }}) are considered. It is shown that the proposed generalized formalism for taking into account the final-state interaction of nucleons describes well the experimental data at energies of incident protons below 600 MeV.","PeriodicalId":604,"journal":{"name":"JETP Letters","volume":"124 5","pages":"328 - 335"},"PeriodicalIF":1.1,"publicationDate":"2026-10-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1134/S0021364026607505.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149214600","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Ghost Imaging Microscopy with Pseudo-Thermal Light 伪热光鬼影成像显微镜

IF 1.1 4区物理与天体物理

JETP Letters Pub Date : 2026-10-18 DOI: 10.1134/S002136402660761X

A. M. Vyunishev, N. N. Davletshin, A. S. Chirkin

引用次数: 0

Multiple Excitation and Decay of the 229mTh(3/2+, 8.4 eV) Isomer during the Electron Transition in the Shell of Thorium Ions 229mTh（3/2+, 8.4 eV）异构体在钍离子壳层电子跃迁过程中的多重激发和衰变

IF 1.1 4区物理与天体物理

JETP Letters Pub Date : 2026-10-18 DOI: 10.1134/S0021364026608006

E. V. Tkalya

引用次数: 0

Application of Volume Capture in Channeling in a Bent Crystal for Extracting a Circulating Beam from an Accelerator 体积捕获在弯曲晶体通道中的应用，用于从加速器中提取循环光束

IF 1.1 4区物理与天体物理

JETP Letters Pub Date : 2026-10-18 DOI: 10.1134/S0021364026607608

S. F. Reshetnikov, E. V. Barnov, A. N. Vasiliev, V. V. Mochalov, V. A. Maisheev, Yu. A. Chesnokov

引用次数: 0

A-Dependence of the Relative Yields of Neutral Mesons in Pion–Nucleus Interactions at Plab = 7 GeV/c in the Hyperon-M Experiment 在Plab = 7 GeV/c条件下介子-核相互作用中中性介子相对产率的a依赖性

IF 1.1 4区物理与天体物理

JETP Letters Pub Date : 2026-10-18 DOI: 10.1134/S0021364026607451

N. E. Voronkov, A. M. Gorin, S. V. Evdokimov, A. A. Zaitsev, V. I. Izucheev, B. V. Polishchuk, V. I. Rykalin, S. A. Sadovsky, Yu. V. Kharlov, A. A. Shangaraev

{"title":"A-Dependence of the Relative Yields of Neutral Mesons in Pion–Nucleus Interactions at Plab = 7 GeV/c in the Hyperon-M Experiment","authors":"N. E. Voronkov, A. M. Gorin, S. V. Evdokimov, A. A. Zaitsev, V. I. Izucheev, B. V. Polishchuk, V. I. Rykalin, S. A. Sadovsky, Yu. V. Kharlov, A. A. Shangaraev","doi":"10.1134/S0021364026607451","DOIUrl":"10.1134/S0021364026607451","url":null,"abstract":"The measurement results (A)-dependences of the relative yields of neutral mesons ({{pi }^{0}}), (omega (782)), ({{f}_{2}}(1270)) and (K_{S}^{0}) in relation to (eta )-meson produced in ({{pi }^{ + }}A)-interactions at a momentum of 7 GeV/c are presented. The measurements were performed on six nuclear targets (Be, C, Al, Cu, Sn, Pb) in the Hyperon-M experiment at the U-70 accelerator complex. Mesons were identified by their photon decays using the LGD2 wide-aperture electromagnetic calorimeter. The yield ratios of the mesons under study to the yield (eta )-mesons were measured in the beam fragmentation region (({{x}_{F}} > 0.6) in the center of mass system (pi N)-reactions). It is shown that the relative yields of non-strange mesons (({{pi }^{0}}), (omega (782)), ({{f}_{2}}(1270))) decrease with increasing the mass number of the target nucleus. At the same time, the yield ratio (K_{S}^{0}{text{/}}eta ) demonstrates a steady statistically significant increase with increasing (A). The obtained results are important for the study of hadron–nucleus interactions at intermediate energies, including testing and fine-tuning transport models such as GiBUU, PHSD, UrQMD, SMASH, regarding the influence of collective effects in the nucleus on the production of mesons with different quark compositions.","PeriodicalId":604,"journal":{"name":"JETP Letters","volume":"124 5","pages":"336 - 344"},"PeriodicalIF":1.1,"publicationDate":"2026-10-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149214546","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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}

引用次数: 0

Temperature Dependence of the Nucleation Field in Isolated and Exchange-Coupled Ultrathin Co Films 分离和交换耦合超薄钴膜成核场的温度依赖性

IF 1.1 4区物理与天体物理

JETP Letters Pub Date : 2026-10-18 DOI: 10.1134/S0021364026607517

R. S. Evstigneev, Yu. P. Kabanov, L. S. Uspenskaya, V. S. Gornakov

引用次数: 0

Spectrograph for the Wavelength Range of 10–60 Å 波长范围为10-60的光谱仪Å

IF 1.1 4区物理与天体物理

JETP Letters Pub Date : 2026-10-01 DOI: 10.1134/S0021364026607773

A. O. Kolesnikov, M. D. Logachev, E. A. Vishnyakov, A. N. Shatokhin, E. N. Ragozin

引用次数: 0

Directed Coulomb Explosion during Relativistic Self-Trapping of an Intense Laser Pulse 强激光脉冲相对论性自俘获过程中的定向库仑爆炸

IF 1.1 4区物理与天体物理

JETP Letters Pub Date : 2026-10-01 DOI: 10.1134/S0021364026607256

A. J. Castillo, S. G. Bochkarev, M. G. Lobok, V. Yu. Bychenkov

引用次数: 0

Parametric Down-Conversion with the Lateral Emission of Idler Photons from the Nonlinear Interaction Region 非线性相互作用区惰光子侧向发射的参量下转换

IF 1.1 4区物理与天体物理

JETP Letters Pub Date : 2026-10-01 DOI: 10.1134/S0021364026607724

G. Kh. Kitaeva, A. V. Osipenkov

{"title":"Parametric Down-Conversion with the Lateral Emission of Idler Photons from the Nonlinear Interaction Region","authors":"G. Kh. Kitaeva, A. V. Osipenkov","doi":"10.1134/S0021364026607724","DOIUrl":"10.1134/S0021364026607724","url":null,"abstract":"A method has been developed to analyze noncollinear schemes of highly nondegenerate parametric down-conversion, taking into account the transverse limitation of the pump region such that low-frequency idler photons leave the nonlinear interaction region before signal photons, crossing the boundaries of the pump beam or the side of a nonlinear crystal. General expressions have been obtained for the second and fourth moments of the fields in schemes with losses of idler photons generated under spatial phase matching conditions at various angles to the pump propagation direction. It has been shown that the effects of leakage of idler photons through the side with increasing scattering angle lead to an overall decrease in the numbers of photons detected in the signal and idler channels. A counterintuitive result has been obtained, indicating that the considered loss mechanism can lead to a significant increase in the biphoton correlation function, determined not only by a decrease in the total number of generated photons, but also by the ratio of the projections of the idler and signal wave vectors on the pump direction.","PeriodicalId":604,"journal":{"name":"JETP Letters","volume":"124 4","pages":"246 - 255"},"PeriodicalIF":1.1,"publicationDate":"2026-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149097966","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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}

引用次数: 0