The European Physical Journal A最新文献_第7页

Examining the fusion excitation functions of reactions induced by 8B on 28Si, 58Ni, 144Sm and 208Pb targets within the CDCC framework 在CDCC框架下，研究了8B对28Si、58Ni、144Sm和208Pb靶的聚变激发函数

IF 2.6 3区物理与天体物理

The European Physical Journal A Pub Date : 2024-12-08 DOI: 10.1140/epja/s10050-024-01459-4

Simran Rani Bharat, Pardeep Singh

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The resonance states of (^{8}textrm{Be}) in the microscopic cluster model with the absorbing boundary conditions method 用吸收边界条件法研究微观团簇模型中(^{8}textrm{Be})的共振态

IF 2.6 3区物理与天体物理

The European Physical Journal A Pub Date : 2024-12-07 DOI: 10.1140/epja/s10050-024-01460-x

Yining Gao, Jinhui Chen, Bo Zhou

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(gamma )-Ray spectroscopy above the 9(^+) isomeric state in the N = Z nucleus (^{66})As (gamma )-射线光谱在9 (^+)同分异构体态的N = Z核(^{66}) As

IF 2.6 3区物理与天体物理

The European Physical Journal A Pub Date : 2024-12-05 DOI: 10.1140/epja/s10050-024-01458-5

Henna Joukainen, Panu Ruotsalainen, Jan Sarén, Praveen C. Srivastava, Deepak Patel, Rauno Julin, Kalle Auranen, Zhuang Ge, Tuomas Grahn, Paul Greenlees, Andres Illana, Henri Jutila, Matti Leino, Jussi Louko, Minna Luoma, Joonas Ojala, Janne Pakarinen, Panu Rahkila, Mikael Sandzelius, Holly Tann, Juha Uusitalo, George L. Zimba

{"title":"(gamma )-Ray spectroscopy above the 9(^+) isomeric state in the N = Z nucleus (^{66})As","authors":"Henna Joukainen, Panu Ruotsalainen, Jan Sarén, Praveen C. Srivastava, Deepak Patel, Rauno Julin, Kalle Auranen, Zhuang Ge, Tuomas Grahn, Paul Greenlees, Andres Illana, Henri Jutila, Matti Leino, Jussi Louko, Minna Luoma, Joonas Ojala, Janne Pakarinen, Panu Rahkila, Mikael Sandzelius, Holly Tann, Juha Uusitalo, George L. Zimba","doi":"10.1140/epja/s10050-024-01458-5","DOIUrl":"10.1140/epja/s10050-024-01458-5","url":null,"abstract":"<div>Excited states above the (9^+) isomer in the odd-odd N = Z nucleus (^{66})As were studied by employing the (^{40})Ca((^{28})Si, pn) fusion-evaporation reaction at the Accelerator Laboratory of the University of Jyväskylä, Finland. A key method in this study was the use of conversion electrons emitted in the de-excitation of the isomeric state in (^{66})As as a tag for prompt (gamma ) rays. Several new states have been added to the (^{66})As level scheme, which was extended up to a tentative spin of 23(hbar ). The previously reported even-spin yrast band has been reassigned to have odd spin values. The odd-spin states above the (9^+) isomer are compared with shell-model calculations using the jj44b and JUN45 interactions. Additionally, the recoil-(beta ) tagging efficiency of the recently developed scintillator detector named Tuike has been determined experimentally for the first time.</div>","PeriodicalId":786,"journal":{"name":"The European Physical Journal A","volume":"60 12","pages":""},"PeriodicalIF":2.6,"publicationDate":"2024-12-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1140/epja/s10050-024-01458-5.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142778106","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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Search for candidate wobbling nuclei in rubidium isotopes 在铷同位素中寻找候选的摇摆核

IF 2.6 3区物理与天体物理

The European Physical Journal A Pub Date : 2024-12-03 DOI: 10.1140/epja/s10050-024-01455-8

H. Jia, M. Q. Zhou, L. Mu, H. Zhang, L. Liu, B. Qi

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Production of charged kaons in ArSc collisions ArSc碰撞中带电介子的产生

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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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 }) 用高能分辨非弹性质子散射研究(^{27}) Al, (^{40}) Ca, (^{56}) Fe, (^{58}) Ni和(^{208}) Pb中的巨偶极子共振 (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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Study of the log-third-difference method for the computation of even-odd staggering in fission yields 计算裂变产率奇偶交错的对数-三差法研究

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}

引用次数: 0

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}

引用次数: 0