Enhanced core polarization in Ni-70 and Zn-74

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61389005%3A_____%2F06%3A00049923" target="_blank" >RIV/61389005:_____/06:00049923 - isvavai.cz</a>

Result on the web

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DOI - Digital Object Identifier

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Result language

angličtina

Original language name

Enhanced core polarization in Ni-70 and Zn-74

Original language description

The reduced transition probabilities B(E2;0+->2+1) of the neutron-rich 74Zn and 70Ni nuclei have been measured by Coulomb excitation on a 208Pb target at intermediate energy. These nuclei have been produced at Grand Accélérateur National d'Ions Lourds via interactions of a 60A MeV 76Ge beam with a Be target. The B(E2) value for 70Ni42 is unexpectedly large, which indicates that neutrons added above N=40 strongly polarize the Z=28 proton core. In the Zn isotopic chain, the steep rise of B(E2) values beyond N=40 continues up to 74Zn44. The enhanced proton core polarization in 70Ni is attributed to the monopole interaction between the neutron in the g9/2 and protons in the f7/2 and f5/2 spin-orbit partner orbitals. This interaction could result in a weakening of magicity in 78Ni50.

Czech name

Zvýšená polarizace koru v jádrech 70Ni a 74Zn

Czech description

Redukované pravděpodobnosti přechodů B(E2;0+->2+1) v neutronobohatých jádrech 74Zn and 70Ni byly změřeny na terči 208Pb při střední energii pomocí Coulombické excitace.

Type

J_x - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)

CEP classification

BG - Nuclear, atomic and molecular physics, accelerators

OECD FORD branch

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Project

<a href="/en/project/GA202%2F04%2F0791" target="_blank" >GA202/04/0791: Study of the structure and properties of neutron-rich isotopes at the border of stability using radioactive nuclear beams</a><br>

Continuities

Z - Vyzkumny zamer (s odkazem do CEZ)

Publication year

2006

Confidentiality

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

Name of the periodical

Physical Review Letters

ISSN

0031-9007

e-ISSN

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Volume of the periodical

96

Issue of the periodical within the volume

23

Country of publishing house

US - UNITED STATES

Number of pages

1

Pages from-to

232501

UT code for WoS article

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EID of the result in the Scopus database

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