Universität zu Köln

Diel, F., Fujita, Y., Fujita, H., Cappuzzello, F., Ganioglu, E., Grewe, E-W, Hashimoto, T., Hatanaka, K., Honma, M., Itoh, T., Jolie, J., Liu, Bin, Otsuka, T., Takahisa, K., Susoy, G., Rubio, B. and Tamii, A. (2019). High-resolution study of the Gamow-Teller (GT_) strength in the Zn-64(He-3, t) Ga-64 reaction. Phys. Rev. C, 99 (5). COLLEGE PK: AMER PHYSICAL SOC. ISSN 2469-9993

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Abstract

Gamow-Teller (GT) transitions starting from the T-z = +2 nucleus Zn-64 to the T-z = +1 nucleus Ga-64 were studied in a (p, n)-type (He-3,t) charge-exchange reaction at a beam energy of 140 MeV/nucleon and scattering angles close to 0 degrees. Here, T-z is the z component of the isospin T. The experiment was conducted at the Research Center for Nuclear Physics (RCNP) in Osaka, Japan. An energy resolution of approximate to 34 keV was achieved by applying beam matching techniques to the Grand Raiden magnetic spectrometer system. With our good resolution, we could observe GT strength fragmented in many states up to an excitation energy of approximate to 11 MeV. By performing angular distribution analysis, we could identify states in Ga-64 excited by GT transitions. The reduced GT transition strengths [B(GT)values] were calculated assuming the proportionality between the cross sections and the B(GT)values. Shell-model calculations using the GXPF1J interaction reproduced the B(GT)strength distribution throughout the spectrum. States with isospin T = 3 were identified by comparing the Zn-64(He-3,t)Ga-64 spectrum with a Zn-64(d, He-2)Cu-64 spectrum. Relative excitation energies of the corresponding structures are in good agreement, supporting the robustness of isospin symmetry in the mass number A = 64 nuclei.

Item Type:	Journal Article
Creators:	Creators Email ORCID ORCID Put Code Diel, F. UNSPECIFIED UNSPECIFIED UNSPECIFIED Fujita, Y. UNSPECIFIED UNSPECIFIED UNSPECIFIED Fujita, H. UNSPECIFIED UNSPECIFIED UNSPECIFIED Cappuzzello, F. UNSPECIFIED UNSPECIFIED UNSPECIFIED Ganioglu, E. UNSPECIFIED UNSPECIFIED UNSPECIFIED Grewe, E-W UNSPECIFIED UNSPECIFIED UNSPECIFIED Hashimoto, T. UNSPECIFIED UNSPECIFIED UNSPECIFIED Hatanaka, K. UNSPECIFIED UNSPECIFIED UNSPECIFIED Honma, M. UNSPECIFIED UNSPECIFIED UNSPECIFIED Itoh, T. UNSPECIFIED UNSPECIFIED UNSPECIFIED Jolie, J. UNSPECIFIED UNSPECIFIED UNSPECIFIED Liu, Bin UNSPECIFIED UNSPECIFIED UNSPECIFIED Otsuka, T. UNSPECIFIED UNSPECIFIED UNSPECIFIED Takahisa, K. UNSPECIFIED UNSPECIFIED UNSPECIFIED Susoy, G. UNSPECIFIED UNSPECIFIED UNSPECIFIED Rubio, B. UNSPECIFIED UNSPECIFIED UNSPECIFIED Tamii, A. UNSPECIFIED UNSPECIFIED UNSPECIFIED
URN:	urn:nbn:de:hbz:38-148009
DOI:	10.1103/PhysRevC.99.054322
Journal or Publication Title:	Phys. Rev. C
Volume:	99
Number:	5
Date:	2019
Publisher:	AMER PHYSICAL SOC
Place of Publication:	COLLEGE PK
ISSN:	2469-9993
Language:	English
Faculty:	Unspecified
Divisions:	Unspecified
Subjects:	no entry
Uncontrolled Keywords:	Keywords Language NUCLEAR-DATA SHEETS; ENERGY-LEVELS; LIGHT-NUCLEI; BEAM LINE; SPECTROMETER; TRANSITIONS; DECAY Multiple languages Physics, Nuclear Multiple languages
Refereed:	Yes
URI:	http://kups.ub.uni-koeln.de/id/eprint/14800