Mass Measurements of Very Neutron-Deficient Mo and Tc Isotopes and Their Impact on rp Process Nucleosynthesis

doi:10.1103/PhysRevLett.106.122501

	Mass Measurements of Very Neutron-Deficient Mo and Tc Isotopes and Their Impact on rp Process Nucleosynthesis
	Haettner, E.1,2; Ackermann, D.2; Audi, G.3; Blaum, K.4; Block, M.2; Eliseev, S.2; Fleckenstein, T.1; Herfurth, F.2; Hessberger, F. P.2; Hofmann, S.2
刊名	PHYSICAL REVIEW LETTERS
	2011-03-21
卷号	106 页码:5
ISSN号	0031-9007
DOI	10.1103/PhysRevLett.106.122501
英文摘要	The masses of ten proton-rich nuclides, including the N = Z + 1 nuclides (85)Mo and (87)Tc, were measured with the Penning trap mass spectrometer SHIPTRAP. Compared to the Atomic Mass Evaluation 2003 a systematic shift of the mass surface by up to 1.6 MeV is observed causing significant abundance changes of the ashes of astrophysical x-ray bursts. Surprisingly low alpha separation energies for neutrondeficient Mo and Tc are found, making the formation of a ZrNb cycle in the rp process possible. Such a cycle would impose an upper temperature limit for the synthesis of elements beyond Nb in the rp process.
资助项目	Helmholtz Association and GSI[VH-NG-033] ; BMBF[06GI185I] ; BMBF[06ML236I] ; BMBF[06GF9103I] ; Max-Planck Society ; Swiss NSF[200020-122287] ; NSF[PHY0822648 (JINA)] ; NSF[PHY0606007]
WOS关键词	NUCLIDES
WOS研究方向	Physics
语种	英语
出版者	AMER PHYSICAL SOC
WOS记录号	WOS:000288599300008
资助机构	Helmholtz Association and GSI ; BMBF ; Max-Planck Society ; Swiss NSF ; NSF
内容类型	期刊论文
源URL	[http://119.78.100.186/handle/113462/33837]
专题	中国科学院近代物理研究所
通讯作者	Haettner, E.
作者单位	1.Univ Giessen, Inst Phys 2, D-35392 Giessen, Germany 2.GSI Helmholtzzentrum Schwerionenforsch, D-64291 Darmstadt, Germany 3.CNRS, IN2P3, CSNSM, F-91405 Orsay, France 4.Max Planck Inst Kernphys, D-69117 Heidelberg, Germany 5.Johannes Gutenberg Univ Mainz, Inst Phys, D-55128 Mainz, Germany 6.Ernst Moritz Arndt Univ Greifswald, Inst Phys, D-17487 Greifswald, Germany 7.Ist Nazl Fis Nucl, Sez Padova, I-35131 Padua, Italy 8.Univ Padua, Dipartimento Fis, I-35131 Padua, Italy 9.Petersburg Nucl Phys Inst, St Petersburg 188300, Russia 10.Univ Jyvaskyla, Dept Phys, Jyvaskyla 40014, Finland
推荐引用方式 GB/T 7714	Haettner, E.,Ackermann, D.,Audi, G.,et al. Mass Measurements of Very Neutron-Deficient Mo and Tc Isotopes and Their Impact on rp Process Nucleosynthesis[J]. PHYSICAL REVIEW LETTERS,2011,106:5.
APA	Haettner, E..,Ackermann, D..,Audi, G..,Blaum, K..,Block, M..,...&Weber, C..(2011).Mass Measurements of Very Neutron-Deficient Mo and Tc Isotopes and Their Impact on rp Process Nucleosynthesis.PHYSICAL REVIEW LETTERS,106,5.
MLA	Haettner, E.,et al."Mass Measurements of Very Neutron-Deficient Mo and Tc Isotopes and Their Impact on rp Process Nucleosynthesis".PHYSICAL REVIEW LETTERS 106(2011):5.