Beta decay half-lives of neutron rich Ti-Co isotopes around N=40

被引：40

作者：

Sorlin, O

Donzaud, C

Axelsson, L

Belleguic, M

Béraud, R

Borcea, C

Canchel, G

Chanabat, E

Daugas, JM

Emsallem, A

Guillemaud-Mueller, D

Kratz, KL

Leenhardt, S

Lewitowicz, M

Longour, C

Lopez, MJ

Santos, FD

Petizon, L

Pfeiffer, B

Pougheon, F

Saint-Laurent, MG

Sauvestre, JE

机构：

[1] Inst Phys Nucl, IN2P3, CNRS, F-91406 Orsay, France

[2] Chalmers Tekniska Hogskola, Inst Fys, S-41296 Gothenburg, Sweden

[3] Inst Phys Nucl, F-69622 Villeurbanne, France

[4] GANIL, F-14021 Caen, France

[5] IAP, Bucharest, Romania

[6] Univ Mainz, Inst Kernchem, D-55099 Mainz, Germany

[7] Univ Louis Pasteur Strasbourg 1, IReS Strasbourg, UMR 7500, F-67037 Strasbourg 2, France

[8] Ctr Etud Bruyeres Le Chatel, F-91680 Bruyeres Le Chatel, France

来源：

NUCLEAR PHYSICS A | 1999年 / 660卷 / 01期

关键词：

Ti57-59; V59-62; Cr61-64; Mn63-66; Fe65-67; Co67-70 (beta-) [from Ni-58(Kr-86; X); E=60.4; MeV/nucleon; measured E-gamma; beta-gamma-coinc; T-1/2; r-process implications;

D O I：

10.1016/S0375-9474(99)00355-3

中图分类号：

O57 [原子核物理学、高能物理学];

学科分类号：

070202 ;

摘要：

The neutron-rich Ti57-59, V59-62, Cr61-64, Mn63-66, Fe65-68, Co67-70 have been produced at GANIL via interactions of a 60.4 MeV/u (KR34+)-K-86 With a Ni-58 target. They have been separated by the doubly achromatic spectrometer LISE3. Beta-decay half-lives have been determined for all produced nuclei, and subsequent gamma-rays have been observed for the most efficiently produced nuclei. The measured half-lives of vanadium and chromium isotopes are compared to QRPA calculations using ground states deformations from the FRDM or ETFSI models. In an astrophysical context, the short half-lives of Ti-58 and Cr-64 indicate that these nuclei are potential r-process progenitors, after beta-decay, of Fe-58 and Ni-64 in certain inclusions of meteorites. (C) 1999 Published by Elsevier Science B.V. All rights reserved.

引用

页码：3 / 19

页数：17

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