High-resolution study of Gamow-Teller transitions from the Tz=1 nucleus 46Ti to the Tz=0 nucleus 46V

被引：49

作者：

Adachi, T

Fujita, Y

von Brentano, P

Lisetskiy, AF

Berg, GPA

Fransen, C

De Frenne, D

Fujita, H

Fujita, K

Hatanaka, K

Honma, M

Jacobs, E

Kamiya, J

Kawase, K

Mizusaki, T

Nakanishi, K

Negret, A

Otsuka, T

Pietralla, N

Popescu, L

Sakemi, Y

Shimbara, Y

Shimizu, Y

Tameshige, Y

Tamii, A

Uchida, M

Wakasa, T

Yosoi, M

Zell, KO

机构：

[1] NIPNE, Bucharest, Romania

[2] Osaka Univ, Dept Phys, Toyonaka, Osaka 5600043, Japan

[3] Univ Cologne, Inst Kernphys, D-50937 Cologne, Germany

[4] Michigan State Univ, NSCL, E Lansing, MI 48824 USA

[5] Kernfys Versneller Inst, NL-9747 AA Groningen, Netherlands

[6] Univ Ghent, Vakgrp Subatomaire & Stralingsfys, B-9000 Ghent, Belgium

[7] Osaka Univ, Res Ctr Nucl Phys, Osaka 5670047, Japan

[8] Univ Aizu, Ctr Math Sci, Fukushima 9658580, Japan

[9] Ishinomaki Senshu Univ, Inst Nat Sci, Kawasaki, Kanagawa 2148580, Japan

[10] Univ Tokyo, Dept Phys, Tokyo 1130033, Japan

来源：

PHYSICAL REVIEW C | 2006年 / 73卷 / 02期

关键词：

D O I：

10.1103/PhysRevC.73.024311

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 Gamow-Teller (GT) transition strengths in fp-shell nuclei are important parameters in presupernova models. A high-energy-resolution (He-3,t) experiment was performed on the T-z=1 nucleus Ti-46 at 0(degrees) and at an intermediate incident energy of 140 MeV/nucleon for the study of precise GT transition strengths to the final T-z=0 nucleus V-46. With an energy resolution of 33 keV, individual GT transitions were observed and GT strengths were derived for them up to the excitation energy of 4.5 MeV. The GT strengths were compared with shell-model calculations using various effective interactions. In this low-lying region, most GT states have isospin T=0. A few GT states with isospin T=1 were identified from the existence of the corresponding (analog) M1 states in Ti-46. By comparing the GT strength with the corresponding (analogous) M1 transition strength studied in Ti-46(e,e(')) or (gamma,gamma(')) measurements, a large constructive interference of orbital and spin terms was suggested for one of these M1 transitions.

引用

页数：10

共 18 条

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PHYSICAL REVIEW C, 2007, 75 (05):
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PHYSICAL REVIEW LETTERS, 2014, 112 (25)
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PHYSICAL REVIEW C, 2013, 88 (01):
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PHYSICAL REVIEW C, 2005, 72 (02):
[10] Analogous Gamow-Teller and M1 Transitions in Tz = ±1/2 Mirror Nuclei and in Tz = ±1, 0 Triplet Nuclei relevant to Low-energy Super GT state
Fujita, Yoshitaka
Fujita, Hirohiko
Tanumura, Yusuke
16TH INTERNATIONAL SYMPOSIUM ON CAPTURE GAMMA-RAY SPECTROSCOPY AND RELATED TOPICS (CGS16), 2018, 178

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