Low-lying isomeric levels in Cu-75

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61389005%3A_____%2F10%3A00356682" target="_blank" >RIV/61389005:_____/10:00356682 - isvavai.cz</a>

Výsledek na webu

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DOI - Digital Object Identifier

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Jazyk výsledku

angličtina

Název v původním jazyce

Low-lying isomeric levels in Cu-75

Popis výsledku v původním jazyce

Isomeric low-lying states were identified and investigated in the Cu-75 nucleus. Two states at 61.8(5)- and 128.3(7)-keV excitation energies with half-lives of 370(40)- and 170(15)-ns were assigned as Cu-75m1 and Cu-75m2, respectively. The measured half-lives combined with the recent spin assignment of the ground state allow one to deduce tentatively spin and parity of the two isomers and the dominant multipolarities of the isomeric transitions with respect to the systematics of the Cu isotopes. Shell-model calculations using an up-to-date effective interaction reproduce the evolution of the 1/2(-), 3/2(-), and 5/2(-) states for the neutron-rich odd-mass Cu isotopes when filling the nu g(9/2). The results indicate a significant change in the nuclear structure in this region, where a single-particle 5/2(-) state coexists with more and more collective 3/2(-) and 1/2(-) levels at low excitation energies.

Název v anglickém jazyce

Low-lying isomeric levels in Cu-75

Popis výsledku anglicky

Isomeric low-lying states were identified and investigated in the Cu-75 nucleus. Two states at 61.8(5)- and 128.3(7)-keV excitation energies with half-lives of 370(40)- and 170(15)-ns were assigned as Cu-75m1 and Cu-75m2, respectively. The measured half-lives combined with the recent spin assignment of the ground state allow one to deduce tentatively spin and parity of the two isomers and the dominant multipolarities of the isomeric transitions with respect to the systematics of the Cu isotopes. Shell-model calculations using an up-to-date effective interaction reproduce the evolution of the 1/2(-), 3/2(-), and 5/2(-) states for the neutron-rich odd-mass Cu isotopes when filling the nu g(9/2). The results indicate a significant change in the nuclear structure in this region, where a single-particle 5/2(-) state coexists with more and more collective 3/2(-) and 1/2(-) levels at low excitation energies.

Druh

J_x - Nezařazeno - Článek v odborném periodiku (Jimp, Jsc a Jost)

CEP obor

BG - Jaderná, atomová a molekulová fyzika, urychlovače

OECD FORD obor

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Projekt

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Návaznosti

Z - Vyzkumny zamer (s odkazem do CEZ)

Rok uplatnění

2010

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

Physical Review. C

ISSN

0556-2813

e-ISSN

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Svazek periodika

81

Číslo periodika v rámci svazku

3

Stát vydavatele periodika

US - Spojené státy americké

Počet stran výsledku

6

Strana od-do

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Kód UT WoS článku

000276769400020

EID výsledku v databázi Scopus

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