High Energy Density Physics最新文献

{"title":"Complex pseudo-partition functions in the Configurationally-Resolved Super-Transition-Array approach for radiative opacity","authors":"Jean-Christophe Pain","doi":"10.1016/j.hedp.2025.101200","DOIUrl":"10.1016/j.hedp.2025.101200","url":null,"abstract":"<div><div>A few years ago, Kurzweil and Hazak developed the Configurationally Resolved Super-Transition-Arrays (CRSTA) method for the computation of hot-plasma radiative opacity. Their approach, based on a temporal integration, is an important refinement of the standard Super-Transition-Arrays (STA) approach, which enables one to recover the underlying structure of the STAs, made of unresolved transition arrays. The CRSTA formalism relies on the use of complex pseudo partition functions, depending on the considered one-electron jump. In this article, we find that, despite the imaginary part, the doubly-recursive relation which was introduced in the original STA method to avoid problems due to alternating-sign terms in partition functions, is still applicable, robust, efficient, and exempt of numerical instabilities. This was rather unexpected, in particular because of the occurrence of trigonometric functions, or Chebyshev polynomials, which can be either positive or negative. We also show that, in the complex case, the recursion relation can be presented in a form where the vector of real and imaginary parts at a given iteration is therefore obtained by a sum of the rotated previous ones.</div></div>","PeriodicalId":49267,"journal":{"name":"High Energy Density Physics","volume":"56 ","pages":"Article 101200"},"PeriodicalIF":1.6,"publicationDate":"2025-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144306543","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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":"NN-PTS: a neural network-assisted PAPR reduction technique for OTFS with high-order modulation","authors":"Arun Kumar ,&nbsp;Aziz Nanthaamornphong","doi":"10.1016/j.hedp.2025.101225","DOIUrl":"10.1016/j.hedp.2025.101225","url":null,"abstract":"<div><div>This paper introduces a new neural network-based partial transmit sequence (NN-PTS) approach for peak-to-average power ratio (PAPR) reduction in orthogonal time frequency space (OTFS) modulation, assessed over various modulation schemes—512-QAM, 256-QAM, and 64-QAM. The new method overcomes the PAPR and bit error rate (BER) trade-off associated with the traditional approaches. For 512-QAM, NN-PTS has an outstanding PAPR reduction to 4.8 dB at a CCDF of 10⁻⁴, surpassing traditional approaches like Selected Mapping (SLM)+PTS (8 dB), PTS (9.9 dB), and others. Likewise, for 256-QAM and 64-QAM, NN-PTS has minimum PAPR values of 3.7 dB and 1.8 dB, respectively, while having significant gains of 2.7 dB to 4.7 dB and 3.4 dB to12 dB over other techniques. In addition, BER analysis also substantiates that NN-PTS reduces PAPR while exhibiting poor BER performance. To illustrate, under 512-QAM at BER = 10⁻⁵, only 10 dB SNR is needed for NN-PTS, while it has a maximum 13 dB gain over the original OTFS signal. A similar trend also occurs for 256-QAM, where the NN-PTS achieves up to a 10.1 dB improvement in SNR compared to the traditional schemes. The outcomes prove that the NN-PTS best trades off PAPR reduction and BER efficiency under changing modulation orders, adaptable to various fading conditions. This renders the proposed NN-PTS a promising candidate for next-generation and 5 G systems, where high spectral efficiency and resilient signal quality are essential.</div></div>","PeriodicalId":49267,"journal":{"name":"High Energy Density Physics","volume":"56 ","pages":"Article 101225"},"PeriodicalIF":0.9,"publicationDate":"2025-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144886100","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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":"Observational and stability analysis of viscosity-driven cosmic acceleration in f(Q,C) gravity","authors":"Amit Samaddar,&nbsp;S. Surendra Singh","doi":"10.1016/j.hedp.2025.101216","DOIUrl":"10.1016/j.hedp.2025.101216","url":null,"abstract":"<div><div>This research explores the potential impact of viscosity by using the <span><math><mrow><mi>f</mi><mrow><mo>(</mo><mi>Q</mi><mo>,</mo><mi>C</mi><mo>)</mo></mrow></mrow></math></span> gravity. We consider two functional forms: <span><math><mrow><mi>f</mi><mrow><mo>(</mo><mi>Q</mi><mo>,</mo><mi>C</mi><mo>)</mo></mrow><mo>=</mo><mi>α</mi><msup><mrow><mi>Q</mi></mrow><mrow><mi>δ</mi></mrow></msup><mo>+</mo><mi>β</mi><mi>C</mi></mrow></math></span> and <span><math><mrow><mi>f</mi><mrow><mo>(</mo><mi>Q</mi><mo>,</mo><mi>C</mi><mo>)</mo></mrow><mo>=</mo><mi>α</mi><msqrt><mrow><mo>−</mo><mi>Q</mi></mrow></msqrt><mo>+</mo><mi>β</mi><mi>C</mi><mo>+</mo><mi>γ</mi><mi>Q</mi></mrow></math></span>, along with a viscous pressure parameterized by <span><math><mrow><msub><mrow><mi>p</mi></mrow><mrow><mi>v</mi></mrow></msub><mo>=</mo><mi>p</mi><mo>−</mo><mn>3</mn><msub><mrow><mi>ζ</mi></mrow><mrow><mn>0</mn></mrow></msub><mi>ρ</mi><mi>H</mi></mrow></math></span>. Using observational datasets (CC 46, BAO 15 and Pantheon 1048) and MCMC techniques, we constrain model parameters and analyze key cosmological quantities. Our investigation reveals a transition from a decelerating to an accelerating phase, characterized by values of <span><math><msub><mrow><mi>q</mi></mrow><mrow><mn>0</mn></mrow></msub></math></span> and <span><math><msub><mrow><mi>z</mi></mrow><mrow><mi>t</mi><mi>r</mi></mrow></msub></math></span> that are compatible with the observational constraints. The equation of state parameter <span><math><mi>ω</mi></math></span> approaches <span><math><mrow><mo>−</mo><mn>1</mn></mrow></math></span>, signaling a late-time acceleration, while the energy conditions indicate a persistent violation of the SEC alongside the stability of NEC, WEC and DEC. Statefinder diagnostics reveal a transition toward <span><math><mi>Λ</mi></math></span>CDM-like behavior and the sound speed squared remains positive which ensure model stability throughout cosmic evolution. Our models provide a viable alternative to standard cosmological frameworks, with potential implications for understanding the influence of viscosity in the Universe’s late-time dynamics.</div></div>","PeriodicalId":49267,"journal":{"name":"High Energy Density Physics","volume":"56 ","pages":"Article 101216"},"PeriodicalIF":0.9,"publicationDate":"2025-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144749001","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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":"Cosmology in f(R,Lm,T) gravity theory using gravitational decoupling","authors":"Tayyab Naseer ,&nbsp;M. Sharif ,&nbsp;Faisal Javed ,&nbsp;H.I. Alrebdi ,&nbsp;Abdel-Haleem Abdel-Aty","doi":"10.1016/j.hedp.2025.101217","DOIUrl":"10.1016/j.hedp.2025.101217","url":null,"abstract":"<div><div>This article considers the existing isotropic dynamical spherically symmetric solution and extends its domain through a recently proposed scheme, refers to the decoupling of gravitational sources within the framework of Lagrangian-based gravity model. After adding an additional fluid distribution into the seed perfect matter, the minimal geometric deformation approach is implemented that leads to a couple of distinct sets of field equations. Since we aim to discuss different phases of cosmic evolution, the first set is handled by considering the flat FLRW model along with a particular form of the scale factor. We also employ a barotropic equation of state which helps in achieving our goal. As the second set is concerned, a density-like constraint is adopted to make the system uniquely solvable. After doing so, we combine the solutions of field equations characterizing both fluid setups using some particular relations. A detailed graphical discussion on the impact of the decoupling and the considered model parameters is also carried out. Finally, we conclude that the modified theory under consideration supports two evolutionary phases such as the radiation and matter-dominated epochs.</div></div>","PeriodicalId":49267,"journal":{"name":"High Energy Density Physics","volume":"56 ","pages":"Article 101217"},"PeriodicalIF":0.9,"publicationDate":"2025-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144771866","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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":"Tidal dynamics and geodesic divergence in the magnetically charged black holes spacetime","authors":"Allah Ditta ,&nbsp;Irfan Mahmood ,&nbsp;Hira Sohail ,&nbsp;Farruh Atamurotov ,&nbsp;Yousef Mohammed Alanazi ,&nbsp;Abaid ur Rehman Virk","doi":"10.1016/j.hedp.2025.101215","DOIUrl":"10.1016/j.hedp.2025.101215","url":null,"abstract":"<div><div>In this study, we explore the tidal effects within the spacetime of a magnetically charged black hole. Our investigation reveals that increasing the magnetic charge leads to a decrease in the radial tidal effect, contrasting with the behavior observed in the angular tidal force. Additionally, we find that the sign of the tidal force’s radial and angular components alternates between the event horizon and the Cauchy horizon. Furthermore, by solving the geodesic divergence equation for two distinct initial conditions of radially free-falling entities toward the black hole, we derive the geodesic divergence vector. These findings contribute to our understanding of the gravitational dynamics in magnetically charged black holes.</div></div>","PeriodicalId":49267,"journal":{"name":"High Energy Density Physics","volume":"56 ","pages":"Article 101215"},"PeriodicalIF":1.6,"publicationDate":"2025-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144523031","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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":"Evaluation of tissue-air ratios (TAR) for various tissue-equivalent materials in diagnostic radiology","authors":"Hamza Sekkat ,&nbsp;Abdellah Khallouqi ,&nbsp;Omar El rhazouani","doi":"10.1016/j.hedp.2025.101209","DOIUrl":"10.1016/j.hedp.2025.101209","url":null,"abstract":"<div><div>Tissue-air ratios (TAR) are fundamental in diagnostic radiology dosimetry, yet limited data exist for polymethyl methacrylate (PMMA) and epoxy resin in conventional X-ray energy ranges. This study experimentally determines TAR using an epoxy resin phantom and validates the results through Monte Carlo (MC) simulations with the Geant4/GATE toolkit. An epoxy resin phantom (1.20 g/cm³) was fabricated, and optically stimulated luminescence dosimeters (OSLDs) measured dose at depths of 2, 4, 6, 8, and 10 cm within epoxy resin, PMMA, and air. A digital X-ray system (40–150 kV) provided the exposure conditions. MC simulations modeled photon transport with a monoenergetic beam (10–150 keV) and phase-space detectors. TAR results showed epoxy resin closely matched PMMA, with deviations of &lt;5 % at low energies (&lt;60 keV) and increasing up to 8 % at higher voltages (≥100 kV). Compared to water and soft tissue, epoxy resin exhibited TAR deviations within 6 % across all depths, confirming its dosimetric suitability. At higher beam qualities, beam hardening effects led to slight TAR overestimations in epoxy resin compared to water, whereas PMMA demonstrated similar trends but with marginally lower values. Despite these variations, epoxy resin TAR remained within acceptable limits, supporting its application as a soft tissue-equivalent material in dosimetric studies.</div></div>","PeriodicalId":49267,"journal":{"name":"High Energy Density Physics","volume":"56 ","pages":"Article 101209"},"PeriodicalIF":1.6,"publicationDate":"2025-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144203950","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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":"Measurement of the impulse from a magnetic nozzle for the model experiment of laser fusion rocket","authors":"Kento Koba ,&nbsp;Taichi Morita ,&nbsp;Hideki Nakashima ,&nbsp;Shinichi Namba ,&nbsp;Yoshitaka Mori ,&nbsp;Toshiyuki Ise ,&nbsp;Shunsuke Murata ,&nbsp;Atsushi Sunahara ,&nbsp;Yoshihiro Kajimura ,&nbsp;Masafumi Edamoto ,&nbsp;Nathan Schilling ,&nbsp;Naoji Yamamoto","doi":"10.1016/j.hedp.2025.101213","DOIUrl":"10.1016/j.hedp.2025.101213","url":null,"abstract":"<div><div>Magnetic nozzle is a component of a propulsion system which obtain thrust from a plasma in a magnetic field. Previous works have investigated the plasma behavior and thrust performance of the magnetic nozzle through experiment and simulation. A thrust stand with a pendulum has been used to experimentally evaluate the impulse bit generated by magnetic nozzle. A direct method, which measures the impulse bit on the magnet by putting it on the pendulum, may be difficult to measure the displacement because of the vibration. An indirect (target) method, which measures the impulse of the plasma accelerated by the magnetic nozzle, can be applied for large pulsed-electromagnets, but may be difficult to measure all of the impulse because of the limited detectable area. Here, we performed two impulse bit measurements with pendulum methods for the same magnetic nozzle. Also, we measured ion current at the same position of the target measurement to investigate the ion extraction from the nozzle. Although the obtained impulse bits are different, the target measurement reproduced the similar energy dependence as the simulation results. In addition, the spatial distribution of ions discharged downstream of the magnetic nozzle could be obtained by ion measurement. Combining these results suggests the possibility of evaluating impulses by target measurement in the future.</div></div>","PeriodicalId":49267,"journal":{"name":"High Energy Density Physics","volume":"56 ","pages":"Article 101213"},"PeriodicalIF":1.6,"publicationDate":"2025-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144306544","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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":"Observation of laser-driven and shock-driven preheat effects on 3D-printed, two-photon polymerization plastic lattices","authors":"R.W. VanDervort,&nbsp;N. Christiansen,&nbsp;T. Coffman,&nbsp;L.M. Green,&nbsp;B.M. Haines,&nbsp;K. Ma,&nbsp;Y. Kim,&nbsp;P.M. Kozlowski,&nbsp;R. Lester,&nbsp;D.W. Schmidt,&nbsp;C. Wong","doi":"10.1016/j.hedp.2025.101210","DOIUrl":"10.1016/j.hedp.2025.101210","url":null,"abstract":"<div><div>Los Alamos National Laboratory’s Bosque campaign on the National Ignition Facility (NIF) seeks to understand how the mix of shell materials and fusion reactants effects the deuterium-tritium (DT) fusion rate in an inertially confined fusion capsule. The NIF platform uses deuterium in a plastic, 3D-printed, two-photon polymerization (2PP) lattice inside the capsule. The voids between the matrix of lattices is filled by tritium gas. Preheat expands the individual lattice struts, which causes deuterium and tritium to prematurely mix before the capsule converges. This preheat is assumed to be created by either laser plasma interactions (LPI) or radiation from the shock. Capsule initial conditions are sensitive to sources of preheat, which necessitates a comprehensive study of how preheat interacts with the lattice.</div><div>In this work, results from a shock-tube campaign conducted on the Omega Laser Facility to study the impacts of preheat on a 2PP, 3D-printed lattice is discussed. In these experiments, OMEGA 60 laser beams directly irradiated a plastic ablator (I<span><math><mrow><mo>∼</mo><mn>8</mn><mo>×</mo><mn>1</mn><msup><mrow><mn>0</mn></mrow><mrow><mn>14</mn></mrow></msup></mrow></math></span> W/cm<span><math><msup><mrow></mrow><mrow><mn>2</mn></mrow></msup></math></span>), which created both a source of hot-electrons and a radiative shock to preheat the lattice. Expansion of a witness disk is radiographically imaged due to the small size of the lattice struts. We attempted to isolate the preheat source to only the radiative shock by including a thin-gold foil in select ablators to mitigated hot-electron preheat. However, we found that the gold layer reduced the shock speed in the lattice from a plastic only case of <span><math><mrow><mn>86</mn><mo>.</mo><mn>0</mn><mspace></mspace><mi>μ</mi></mrow></math></span>m/ns to <span><math><mrow><mn>51</mn><mo>.</mo><mn>2</mn><mspace></mspace><mi>μ</mi><mi>m</mi></mrow></math></span>/ns. The gold layer is estimated to dramatically reduce the radiative preheat due to slowing of the shock, while the hot electron energy is only mildly reduced. Measurements of the witness disk expansion were likely scattered due to the nearby lattice having a similar average areal density to that of the edge of the witness disk. The uncertainties of these measurements are large and more experimental measurements with target design changes are needed to clarify the impacts of preheat on the lattice expansion.</div></div>","PeriodicalId":49267,"journal":{"name":"High Energy Density Physics","volume":"56 ","pages":"Article 101210"},"PeriodicalIF":1.6,"publicationDate":"2025-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144571935","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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":"Advancing the understanding of compact stars: The role of f(R,Lm,T) gravity on physical existence of two different pulsars","authors":"Tayyab Naseer ,&nbsp;Komal Hassan ,&nbsp;M. Sharif ,&nbsp;Baiju Dayanandan ,&nbsp;Faisal Javed","doi":"10.1016/j.hedp.2025.101197","DOIUrl":"10.1016/j.hedp.2025.101197","url":null,"abstract":"<div><div>Recent studies have demonstrated the possibility of using modified gravity theories in order to explain the sense of astronomical entities. This paper examines the dynamics of dense astronomical entities under the framework of <span><math><mrow><mi>f</mi><mrow><mo>(</mo><mi>R</mi><mo>,</mo><msub><mrow><mi>L</mi></mrow><mrow><mi>m</mi></mrow></msub><mo>,</mo><mi>T</mi><mo>)</mo></mrow></mrow></math></span> gravity. We formulate gravitational equations that incorporate the characteristics of the non-isotropic static interior spacetime. By imposing two particular conditions related to the radial function and pressure anisotropy, we derive two solutions to these complex equations of motion. We encounter differential equations in both cases whose solutions involve two constants. The Darmois junction conditions are then employed to calculate these constants. Moreover, the requirement for radial pressure to vanish at the hypersurface is also significant in this analysis. Additionally, we graphically assess specific conditions that must be satisfied to ensure the model’s viability across various parameter values. For this purpose, we utilize observational data from two compact stars, Her X-1 and Cen X-3. We conclude that both models align well with the necessary criteria for viability and stability. It is important to emphasize that our study amplifies the understanding of how this modified gravity influences the interior fluid distribution of compact stars, offering invaluable revelations for future studies.</div></div>","PeriodicalId":49267,"journal":{"name":"High Energy Density Physics","volume":"56 ","pages":"Article 101197"},"PeriodicalIF":1.6,"publicationDate":"2025-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143918312","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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":"Chaotic behavior of an accelerated electron driven by a non-autonomous Lorenz-Type Laser Field (LTLF)","authors":"Amit Pratap Singh","doi":"10.1016/j.hedp.2025.101207","DOIUrl":"10.1016/j.hedp.2025.101207","url":null,"abstract":"<div><div>There is significant potential for studying the chaotic behavior of charged particles driven by laser fields. Recent technological advancements in the generation of ultrahigh-intensity electromagnetic fields have further increased the relevance of this topic. In this study, a mathematical model was developed by modifying the Lorenz system to incorporate the effects of an electromagnetic field. The resulting system, referred to as the Lorenz-Type Laser Field (LTLF) system, introduces time-dependent variations in the three Lorenz parameters. A dynamical analysis of the non-autonomous LTLF system was conducted using stability analysis, Lyapunov exponents, bifurcation diagrams, and basins of attraction. The chaotic dynamics of accelerated electrons governed by the LTLF system were investigated theoretically. The findings reveal a rich variety of behaviors, including transitions between dynamical regimes, intermittent chaos, complex bifurcation sequences, and significant attractor deformations.</div></div>","PeriodicalId":49267,"journal":{"name":"High Energy Density Physics","volume":"56 ","pages":"Article 101207"},"PeriodicalIF":1.6,"publicationDate":"2025-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144195895","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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}