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

Kód výsledku v 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>

Výsledek na webu

<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>

Jazyk výsledku

angličtina

Název v původním jazyce

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

Popis výsledku v původním jazyce

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

Název v anglickém jazyce

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

Popis výsledku anglicky

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

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)<br>I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2013

Kód důvěrnosti údajů

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

Název periodika

European Physical Journal A

ISSN

1434-6001

e-ISSN

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Svazek periodika

49

Číslo periodika v rámci svazku

9

Stát vydavatele periodika

DE - Spolková republika Německo

Počet stran výsledku

13

Strana od-do

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Kód UT WoS článku

000324641400001

EID výsledku v databázi Scopus

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