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Title: Negative parity states of {sup 11}B and {sup 11}C and the similarity with {sup 12}C

Abstract

The negative parity states of {sup 11}B and {sup 11}C were studied based on the calculations of antisymmetrized molecular dynamics (AMD). The calculations reproduced well the experimental strengths of Gamov-Teller (GT), M1, and monopole transitions. We especially focused on the 3/2{sub 3}{sup -} and 5/2{sub 2}{sup -} states for which GT transition strengths were recently measured. The weak M1 and GT transitions for 3/2{sub 3}{sup -} in {sup 11}B and {sup 11}C are described by a well-developed cluster structure of 2{alpha}+t and 2{alpha}+{sup 3}He, respectively, while the strong transitions for 5/2{sub 2}{sup -} is characterized by an intrinsic spin excitation with no cluster structure. It was found that the 3/2{sub 3}{sup -} state is a dilute cluster state, and its features are similar to those of {sup 12}C(0{sub 2}{sup +}) which is considered to be a gas state of 3{alpha} clusters.

Authors:
 [1]
  1. Yukawa Institute for Theoretical Physics, Kyoto University, Kyoto 606-8502 (Japan)
Publication Date:
OSTI Identifier:
20991003
Resource Type:
Journal Article
Resource Relation:
Journal Name: Physical Review. C, Nuclear Physics; Journal Volume: 75; Journal Issue: 2; Other Information: DOI: 10.1103/PhysRevC.75.024302; (c) 2007 The American Physical Society; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
73 NUCLEAR PHYSICS AND RADIATION PHYSICS; BORON 11; CARBON 11; CARBON 12; EXCITATION; HELIUM 3; MOLECULAR DYNAMICS METHOD; MONOPOLES; PARITY; SPIN

Citation Formats

Kanada-En'yo, Yoshiko. Negative parity states of {sup 11}B and {sup 11}C and the similarity with {sup 12}C. United States: N. p., 2007. Web. doi:10.1103/PHYSREVC.75.024302.
Kanada-En'yo, Yoshiko. Negative parity states of {sup 11}B and {sup 11}C and the similarity with {sup 12}C. United States. doi:10.1103/PHYSREVC.75.024302.
Kanada-En'yo, Yoshiko. Thu . "Negative parity states of {sup 11}B and {sup 11}C and the similarity with {sup 12}C". United States. doi:10.1103/PHYSREVC.75.024302.
@article{osti_20991003,
title = {Negative parity states of {sup 11}B and {sup 11}C and the similarity with {sup 12}C},
author = {Kanada-En'yo, Yoshiko},
abstractNote = {The negative parity states of {sup 11}B and {sup 11}C were studied based on the calculations of antisymmetrized molecular dynamics (AMD). The calculations reproduced well the experimental strengths of Gamov-Teller (GT), M1, and monopole transitions. We especially focused on the 3/2{sub 3}{sup -} and 5/2{sub 2}{sup -} states for which GT transition strengths were recently measured. The weak M1 and GT transitions for 3/2{sub 3}{sup -} in {sup 11}B and {sup 11}C are described by a well-developed cluster structure of 2{alpha}+t and 2{alpha}+{sup 3}He, respectively, while the strong transitions for 5/2{sub 2}{sup -} is characterized by an intrinsic spin excitation with no cluster structure. It was found that the 3/2{sub 3}{sup -} state is a dilute cluster state, and its features are similar to those of {sup 12}C(0{sub 2}{sup +}) which is considered to be a gas state of 3{alpha} clusters.},
doi = {10.1103/PHYSREVC.75.024302},
journal = {Physical Review. C, Nuclear Physics},
number = 2,
volume = 75,
place = {United States},
year = {Thu Feb 15 00:00:00 EST 2007},
month = {Thu Feb 15 00:00:00 EST 2007}
}