Toroidal, compression, and vortical dipole strengths in Sm144-154: Skyrme-RPA exploration of the deformation effect

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216208%3A11320%2F13%3A10191513" target="_blank" >RIV/00216208:11320/13:10191513 - isvavai.cz</a>

Result on the web

<a href="http://dx.doi.org/10.1140/epja/i2013-13119-3" target="_blank" >http://dx.doi.org/10.1140/epja/i2013-13119-3</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1140/epja/i2013-13119-3" target="_blank" >10.1140/epja/i2013-13119-3</a>

Result language

angličtina

Original language name

Toroidal, compression, and vortical dipole strengths in Sm144-154: Skyrme-RPA exploration of the deformation effect

Original language description

A comparative analysis of toroidal, compressional and vortical dipole strengths in the spherical Sm-144 and the deformed Sm-154 is performed within the random-phase approximation using a set of different Skyrme forces. Isoscalar (T = 0), isovector (T = 1), and electromagnetic excitation channels are considered. The role of the nuclear convection j(con) and magnetization j(mag) currents is inspected. It is shown that the deformation leads to an appreciable redistribution of the strengths and causes a spectacular deformation splitting (exceeding 5 MeV) of the isoscalar compressional mode. When stepping from Sm-144 to Sm-154, we observe an increase of the toroidal, compression and vortical contributions in the low-energy region (often called pygmy resonance). The strength in this region seems to be an overlap of various excitation modes. The energy centroids of the strengths depend significantly on the isoscalar effective mass m(0). Skyrme forces with a large m(0) (typically m(0)/m approx

Czech name

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Czech description

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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

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Continuities

Z - Vyzkumny zamer (s odkazem do CEZ)<br>I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year

2013

Confidentiality

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

Name of the periodical

European Physical Journal A

ISSN

1434-6001

e-ISSN

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Volume of the periodical

49

Issue of the periodical within the volume

9

Country of publishing house

DE - GERMANY

Number of pages

13

Pages from-to

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UT code for WoS article

000324641400001

EID of the result in the Scopus database

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