Mass measurements of neutron-deficient Y, Zr, and Nb isotopes and their impact 
on rp and νp nucleosynthesis processes

Xing, Y. M.; Li, K. A.; Zhang, Y. H.; Zhou, X. H.; Wang, M.; Litvinov, Yu. A.; Blaum, Klaus; Wanajo, S.; Kubono, S.; Martínez-Pinedo, G.; Sieverding, A.; Chen, R. J.; Shuai, P.; Fu, C. Y.; Yan, X. L.; Huang, W. J.; Xu, X.; Tang, X. D.; Xu, H. S.; Bao, T.; Chen, X. C.; Gao, B. S.; He, J. J.; Lam, Y. H.; Li, H. F.; Liu, J. H.; Ma, X. W.; Mao, R. S.; Si, M.; Sun, M. Z.; Tu, X. L.; Wang, Q.; Yang, J. C.; Yuan, Y. J.; Zeng, Q.; Zhang, P.; Zhou, X.; Zhan, W. L.; Litvinov, S.; Audi, G.; Uesaka, T.; Yamaguchi, Y.; Yamaguchi, T.; Ozawa, A.; Fröhlich, C.; Rauscher, T.; Thielemann, F.-K.; Sun, B. H.; Sun, Y.; Dai, A. C.; Xu, F. R.

doi:10.1016/j.physletb.2018.04.009

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Mass measurements of neutron-deficient Y, Zr, and Nb isotopes and their impact on rp and νp nucleosynthesis processes

Xing, Y. M., Li, K. A., Zhang, Y. H., Zhou, X. H., Wang, M., Litvinov, Y. A., et al. (2018). Mass measurements of neutron-deficient Y, Zr, and Nb isotopes and their impact on rp and νp nucleosynthesis processes. Physics Letters B, 781, 358-363. doi:10.1016/j.physletb.2018.04.009.

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Item Permalink: https://hdl.handle.net/21.11116/0000-0001-3D89-1 Version Permalink: https://hdl.handle.net/21.11116/0000-0001-3D93-5

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https://www.sciencedirect.com/science/article/pii/S0370269318302934?via%3Dihub (Publisher version) Open Access status unknown

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Xing, Y. M.¹, Author
Li, K. A.¹, Author
Zhang, Y. H.¹, Author
Zhou, X. H.¹, Author
Wang, M.¹, Author
Litvinov, Yu. A.¹, Author
Blaum, Klaus², Author
Wanajo, S.¹, Author
Kubono, S.¹, Author
Martínez-Pinedo, G.¹, Author
Sieverding, A.¹, Author
Chen, R. J.¹, Author
Shuai, P.¹, Author
Fu, C. Y.¹, Author
Yan, X. L.¹, Author
Huang, W. J.¹, Author
Xu, X.¹, Author
Tang, X. D.¹, Author
Xu, H. S.¹, Author
Bao, T.¹, Author
Chen, X. C.¹, AuthorGao, B. S.¹, AuthorHe, J. J.¹, AuthorLam, Y. H.¹, AuthorLi, H. F.¹, AuthorLiu, J. H.¹, AuthorMa, X. W.¹, AuthorMao, R. S.¹, AuthorSi, M.¹, AuthorSun, M. Z.¹, AuthorTu, X. L.¹, AuthorWang, Q.¹, AuthorYang, J. C.¹, AuthorYuan, Y. J.¹, AuthorZeng, Q.¹, AuthorZhang, P.¹, AuthorZhou, X.¹, AuthorZhan, W. L.¹, AuthorLitvinov, S.¹, AuthorAudi, G.¹, AuthorUesaka, T.¹, AuthorYamaguchi, Y.¹, AuthorYamaguchi, T.¹, AuthorOzawa, A.¹, AuthorFröhlich, C.¹, AuthorRauscher, T.¹, AuthorThielemann, F.-K.¹, AuthorSun, B. H.¹, AuthorSun, Y.¹, AuthorDai, A. C.¹, AuthorXu, F. R.¹, Author more..

Affiliations:
1CAS Key Laboratory of High Precision Nuclear Spectroscopy and Center for Nuclear Matter Science, Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, People’s Republic of China GSI Helmholtzzentrum für Schwerionenforschung, Planckstraße 1, 64291 Darmstadt, Germany ExtreMe Matter Institute EMMI, GSI Helmholtzzentrum für Schwerionenforschung, Planckstraße 1, 64291 Darmstadt, Germany Department of Engineering and Applied Sciences, Sophia University, Chiyoda-ku, Tokyo 102-8554, Japan iTHES Research Group, RIKEN, Wako, Saitama 351-0198, Japan gCenter for Nuclear Study, University of Tokyo, Saitama 351-0198, Japan Institut für Kernphysik (Theoriezentrum), Technische Universität Darmstadt, Schlossgartenstraße 2, 64289 Darmstadt, Germany University of Chinese Academy of Sciences, Beijing 100049, People’s Republic of China CSNSM, Univ Paris-Sud, CNRS/IN2P3, Université Paris-Saclay, 91405 Orsay, France Key Laboratory of Optical Astronomy, National Astronomical Observatories, Chinese Academy of Sciences, Beijing 100012, People’s Republic of China Research Center for Hadron Physics, National Laboratory of Heavy Ion Accelerator Facility in Lanzhou and University of Science and Technology of China, Hefei 230026, People’s Republic of China RIKEN Nishina Center, RIKEN, Saitama 351-0198, Japan Department of Physics, Saitama University, Saitama 338-8570, Japan Insititute of Physics, University of Tsukuba, Ibaraki 305-8571, Japan Department of Physics, North Carolina State University, Raleigh, NC 27695-8202, USA Centre for Astrophysical Research, University of Hertfordshire, Hatfield AL10 9AB, UK Department of Physics, University of Basel, Klingelbergstraße 82, CH-4056 Basel, Switzerland School of Physics and Nuclear Energy Engineering, Beihang University, Beijing 100191, People’s Republic of China Department of Physics and Astronomy, Shanghai Jiao Tong University, Shanghai 200240, People’s Republic of China State Key Laboratory of Nuclear Physics and Technology, School of Physics, Peking University, Beijing 100871, People’s Republic of China , ou_persistent22
2Division Prof. Dr. Klaus Blaum, MPI for Nuclear Physics, Max Planck Society, ou_904548

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MPINP: Präzisionsexperimente - Abteilung Blaum

Abstract: Using isochronous mass spectrometry at the experimental storage ring CSRe in Lanzhou, the masses of ⁸²Zr and ⁸⁴Nb were measured for the first time with an uncertainty of ∼10 keV, and the masses of ⁷⁹Y, ⁸¹Zr, and ⁸³Nb were re-determined with a higher precision. The latter are significantly less bound than their literature values. Our new and accurate masses remove the irregularities of the mass surface in this region of the nuclear chart. Our results do not support the predicted island of pronounced low α separation energies for neutron-deficient Mo and Tc isotopes, making the formation of Zr–Nb cycle in the rp-process unlikely. The new proton separation energy of ⁸³Nb was determined to be 490(400) keV smaller than that in the Atomic Mass Evaluation 2012. This partly removes the overproduction of the p-nucleus ⁸⁴Sr relative to the neutron-deficient molybdenum isotopes in the previous νp-process simulations.

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Dates: Date issued: 2018-04-25

Publication Status: Issued

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Rev. Type: Peer

Identifiers: DOI: 10.1016/j.physletb.2018.04.009

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Title: Physics Letters B

Source Genre: Journal

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Publ. Info: North-Holland

Pages: - Volume / Issue: 781 Sequence Number: - Start / End Page: 358 - 363 Identifier: ISSN: 0370-2693
CoNE: https://pure.mpg.de/cone/journals/resource/954925524777