The European Physical Journal A最新文献_第2页

Erratum to: Studies of the Giant Dipole Resonance in (^{27})Al, (^{40})Ca, (^{56})Fe, (^{58})Ni and (^{208})Pb with high energy-resolution inelastic proton scattering under (0^{circ })

IF 2.6 3区物理与天体物理

The European Physical Journal A Pub Date : 2024-12-02 DOI: 10.1140/epja/s10050-024-01435-y

M. Jingo, E. Z. Buthelezi, J. Carter, G. R. J. Cooper, R. W. Fearick, S. V. Förtsch, C. O. Kureba, A. M. Krumbholz, P. von Neumann-Cosel, R. Neveling, P. Papka, I. Poltoratska, V. Yu. Ponomarev, A. Richter, E. Sideras-Haddad, F. D. Smit, J. A. Swartz, A. Tamii, I. T. Usman

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Production of charged kaons in ArSc collisions

IF 2.6 3区物理与天体物理

The European Physical Journal A Pub Date : 2024-12-02 DOI: 10.1140/epja/s10050-024-01452-x

G. I. Lykasov, A. I. Malakhov, A. A. Zaitsev

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Study of the log-third-difference method for the computation of even-odd staggering in fission yields

IF 2.6 3区物理与天体物理

The European Physical Journal A Pub Date : 2024-12-01 DOI: 10.1140/epja/s10050-024-01450-z

Belén Montenegro Viñas, Manuel Caamaño

{"title":"Study of the log-third-difference method for the computation of even-odd staggering in fission yields","authors":"Belén Montenegro Viñas, Manuel Caamaño","doi":"10.1140/epja/s10050-024-01450-z","DOIUrl":"10.1140/epja/s10050-024-01450-z","url":null,"abstract":"<div>The even-odd staggering in fission fragments yield distributions is an important observable to address the role of intrinsic excitations in the fission process. However, its computation as a function of the fragment split is an ill-posed problem that is usually solved through certain assumptions. Arguably, the most widely used method for its computation is the log-third-difference method, which assumes an underlying local Gaussian distribution. Experimental data of the even-odd effect show sharp features and peaks that are a challenge for the log-third difference method (or any method for that matter). This paper presents a detailed study of the performance of the log-third-difference method and describes three strategies for improving the precision and accuracy around these sharp features. The best results are obtained with an iterative application of the method and with the use of a multi-Gaussian fit. A hybrid process combining both corrections is also described and applied to real data. In regions with a smooth behaviour, the direct application of the log-third-difference method remains the best option.</div>","PeriodicalId":786,"journal":{"name":"The European Physical Journal A","volume":"60 12","pages":""},"PeriodicalIF":2.6,"publicationDate":"2024-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142757939","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}

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Investigation of very high radiation hardness of 21 (varvec{mu })m silicon self-biased detectors 21 (varvec{mu })m 硅自偏压探测器的超高辐射硬度研究

IF 2.6 3区物理与天体物理

The European Physical Journal A Pub Date : 2024-11-27 DOI: 10.1140/epja/s10050-024-01454-9

Andrzej J. Kordyasz, Monika Paluch-Ferszt, Zygmunt Szefliński, Katarzyna Z. Krutul-Bitowska, Michał Kowalczyk, Andrzej Bednarek, Paweł J. Napiorkowski, Ł.ukasz Kordyasz, Grzegorz Gawlik, Konrad Krzyżak, Michał Gajewski

{"title":"Investigation of very high radiation hardness of 21 (varvec{mu })m silicon self-biased detectors","authors":"Andrzej J. Kordyasz, Monika Paluch-Ferszt, Zygmunt Szefliński, Katarzyna Z. Krutul-Bitowska, Michał Kowalczyk, Andrzej Bednarek, Paweł J. Napiorkowski, Ł.ukasz Kordyasz, Grzegorz Gawlik, Konrad Krzyżak, Michał Gajewski","doi":"10.1140/epja/s10050-024-01454-9","DOIUrl":"10.1140/epja/s10050-024-01454-9","url":null,"abstract":"<div>The radiation damage of 21 (upmu )m thick self-biased epitaxial (varDelta E) detectors were tested as a function of fluence of 90 MeV (^{14})N ions. Technology of production and technique of measurements of (varDelta E) detectors were described. A new technique of soldering contact to thin detector is shown. In the present work the 21 (upmu )m thick self-biased detectors marked as d4 and d5 show proper operation with the fluence about 4(cdot )10(^{15}) (hbox {ions/cm}^{2}) and the fluence about 8(cdot )10(^{15}) (hbox {ions/cm}^{2}), respectively. The charge collection efficiency of thin d5 (varDelta E) detector was increased about double at fluence about 8(cdot )10(^{15}) (hbox {ions/cm}^{2}). The charge collection efficiency of thin d4 (varDelta E) detector was increased about 35(%) at fluence about 4(cdot )10(^{15}) (hbox {ions/cm}^{2}) followed decrease about 70(%) of detector counting rate registration from fluence 9.1(cdot )10(^{15}) (hbox {ions/cm}^{2}) to fluence about 5(cdot )10(^{16}) (hbox {ions/cm}^{2}) due to partially removing of Al evaporated contact from detector surface as an effect of heavy ion irradiation. Increase of charge collection efficiency of thin self-biased detectors manufactured by the low-temperature technique was probably produced by increasing of build-in potential as an effect of activate carrier concentration of boron ions in epitaxial layer by heavy ion irradiation.</div>","PeriodicalId":786,"journal":{"name":"The European Physical Journal A","volume":"60 11","pages":""},"PeriodicalIF":2.6,"publicationDate":"2024-11-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142736808","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}

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First lifetime measurement of the (9^{-}) isomer in (^{92})Nb 首次测量(^{92})Nb中的(9^{-})异构体的寿命

IF 2.6 3区物理与天体物理

The European Physical Journal A Pub Date : 2024-11-27 DOI: 10.1140/epja/s10050-024-01447-8

N. Goel, S. Nag, B. Maheshwari, D. Choudhury, R. Palit, V. Malik, P. Dey, Md. S. R. Laskar, F. S. Babra, B. Das, A. Kundu, A. Sindhu, Abraham T. Vazhappilly, S. V. Jadhav, B. S. Naidu

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Ab initio description of monopole resonances in light- and medium-mass nuclei 轻质和中质原子核单极共振的 Ab initio 描述

IF 2.6 3区物理与天体物理

The European Physical Journal A Pub Date : 2024-11-27 DOI: 10.1140/epja/s10050-024-01448-7

A. Porro, T. Duguet, J.-P. Ebran, M. Frosini, R. Roth, V. Somà

{"title":"Ab initio description of monopole resonances in light- and medium-mass nuclei","authors":"A. Porro, T. Duguet, J.-P. Ebran, M. Frosini, R. Roth, V. Somà","doi":"10.1140/epja/s10050-024-01448-7","DOIUrl":"10.1140/epja/s10050-024-01448-7","url":null,"abstract":"<div>Giant Resonances are, with nuclear rotations, the most evident expression of collectivity in finite nuclei. These two categories of excitations, however, are traditionally described within different formal schemes, such that vibrational and rotational degrees of freedom are separately treated and coupling effects between those are often neglected. The present work puts forward an approach aiming at a consistent treatment of vibrations and rotations. Specifically, this paper is the last in a series of four dedicated to the investigation of the giant monopole resonance in doubly open-shell nuclei via the ab initio Projected Generator Coordinate Method (PGCM). The present focus is on the treatment and impact of angular momentum restoration within such calculations. The PGCM being based on the use of deformed mean-field states, the angular-momentum restoration is performed when solving the secular equation to extract vibrational excitations. In this context, it is shown that performing the angular momentum restoration only after solving the secular equation contaminates the monopole response with an unphysical coupling to the rotational motion, as was also shown recently for (quasi-particle) random phase approximation calculations based on a deformed reference state. Eventually, the present work based on the PGCM confirms that an a priori angular momentum restoration is necessary to handle consistently both collective motions at the same time. This further pleads in favor of implementing the full-fledged projected (quasi-particle) random phase approximation in the future.</div>","PeriodicalId":786,"journal":{"name":"The European Physical Journal A","volume":"60 11","pages":""},"PeriodicalIF":2.6,"publicationDate":"2024-11-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1140/epja/s10050-024-01448-7.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142714658","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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}

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Flow and equation of state of nuclear matter at ({varvec{E_textrm{kin}/A=0.25}})–1.5 GeV with the SMASH transport approach 用SMASH输运方法计算核物质在({varvec{E_textrm{kin}/A=0.25}})-1.5 GeV的流动和状态方程

IF 2.6 3区物理与天体物理

The European Physical Journal A Pub Date : 2024-11-27 DOI: 10.1140/epja/s10050-024-01445-w

L. A. Tarasovičová, J. Mohs, A. Andronic, H. Elfner, K.-H. Kampert

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Improving relativistic energy density functionals with tensor couplings 用张量耦合改进相对论能量密度函数

IF 2.6 3区物理与天体物理

The European Physical Journal A Pub Date : 2024-11-27 DOI: 10.1140/epja/s10050-024-01442-z

Stefan Typel, Shalom Shlomo

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Core-excited states leading to the high-spin band structure in (^{93})Nb nucleus 导致（^{93}）铌核中高自旋带结构的核激发态

IF 2.6 3区物理与天体物理

The European Physical Journal A Pub Date : 2024-11-25 DOI: 10.1140/epja/s10050-024-01440-1

N. Goel, S. Nag, R. Palit, V. Malik, P. Dey, Md. S. R. Laskar, F. S. Babra, B. Das, A. Kundu, A. Sindhu, Abraham T. Vazhappilly, S. V. Jadhav, B. S. Naidu

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Phenomenological analysis of triply heavy pentaquarks with configurations (qbar{q}QQQ) and (qqQQbar{Q}) 具有配置 (qbar{q}QQQ 和 (qqQQbar{Q}) 的三重五夸克的现象学分析）

IF 2.6 3区物理与天体物理

The European Physical Journal A Pub Date : 2024-11-25 DOI: 10.1140/epja/s10050-024-01449-6

Ankush Sharma, Alka Upadhyay

{"title":"Phenomenological analysis of triply heavy pentaquarks with configurations (qbar{q}QQQ) and (qqQQbar{Q})","authors":"Ankush Sharma, Alka Upadhyay","doi":"10.1140/epja/s10050-024-01449-6","DOIUrl":"10.1140/epja/s10050-024-01449-6","url":null,"abstract":"<div>We carried out the systematic analysis of the s-wave triply heavy pentaquarks with possible configurations like (qbar{q}QQQ) and (qqQQbar{Q}), ((q = u, d, s) and (Q = c, b) quarks). Special unitary representations are utilized to study the classification scheme for triply heavy pentaquark states. We classified the (qbar{q}QQQ)-type pentaquarks into an octet and (qqQQbar{Q})-type pentaquarks into sextet configurations with the help of SU(3) flavor representation. Also, with the help of SU(2) spin representation, we studied the possible spin assignments ((frac{1}{2}^-), (frac{3}{2}^-), and (frac{5}{2}^-)) for ground state triply heavy pentaquarks. Furthermore, we used the formalism of the extended Gursey–Radicati mass formula and effective mass scheme to estimate the masses of triply heavy pentaquarks. Additionally, we calculated the magnetic moment assignments using the effective mass and screened charge schemes. The predicted outcomes align well with the existing theoretical data and benefit future studies. Our work provides a comprehensive framework that combines the theoretical aspects of SU(3) and SU(2) symmetries with practical predictions for observables, offering a strong foundation for experimental verification. This integrated approach enhances our understanding of the complex interactions within triply heavy pentaquarks and underscores their potential role in probing deeper into the dynamics of the strong force. These findings are crucial for designing future high-energy experiments that directly observe these exotic states and confirm their properties, paving the way for new insights into quantum chromodynamics.</div>","PeriodicalId":786,"journal":{"name":"The European Physical Journal A","volume":"60 11","pages":""},"PeriodicalIF":2.6,"publicationDate":"2024-11-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142714475","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}

引用次数: 0