Reaction cross-sections and reduced strong absorption radii of nuclei in the vicinity of closed shells N=20 and N=28
Result description
Energy integrated reaction cross-section measurements of around sixty neutron-rich nuclei covering the region of closed shells N = 20 and N = 28 were performed at intermediate energy (30-65 A.MeV) using direct method. In this experiment, silicon detectors were used as active targets. The reduced strong absorption radii, r(0)(2), for 19 new nuclei (F-27, Ne-27,Ne-30, Na-33, Mg-28,Mg-34-35, Al36-38, Si38-40, P41-42, S42-44 and Cl-45) are deduced for the first time. An additional 60 radii, also measured inthis experiment, are compared to results from literature. A new quadratic parametrization is proposed for the nuclear radius as a function of the isospin in the region of closed shells N = 8 and N = 28. According to this parametrization, the skin effectis well reproduced and anomalous behaviour on the radii are observed in N-23, Ne-29, Na-33, Mg-35, S-44, Cl-45 and Ar-45 nuclei.
Keywords
The result's identifiers
Result code in IS VaVaI
Result on the web
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DOI - Digital Object Identifier
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Alternative languages
Result language
angličtina
Original language name
Reaction cross-sections and reduced strong absorption radii of nuclei in the vicinity of closed shells N=20 and N=28
Original language description
Energy integrated reaction cross-section measurements of around sixty neutron-rich nuclei covering the region of closed shells N = 20 and N = 28 were performed at intermediate energy (30-65 A.MeV) using direct method. In this experiment, silicon detectors were used as active targets. The reduced strong absorption radii, r(0)(2), for 19 new nuclei (F-27, Ne-27,Ne-30, Na-33, Mg-28,Mg-34-35, Al36-38, Si38-40, P41-42, S42-44 and Cl-45) are deduced for the first time. An additional 60 radii, also measured inthis experiment, are compared to results from literature. A new quadratic parametrization is proposed for the nuclear radius as a function of the isospin in the region of closed shells N = 8 and N = 28. According to this parametrization, the skin effectis well reproduced and anomalous behaviour on the radii are observed in N-23, Ne-29, Na-33, Mg-35, S-44, Cl-45 and Ar-45 nuclei.
Czech name
Průřezy reakcí a redukované poloměry silné absorbce jader v okolí uzavřených slupek N=23 a N=28
Czech description
Integrované účinné průřezy byly změřeny pro 60 neutrono-bohatých jader v oblasti N=20 a N=28 při energiích (30:65) AMev. Redukované poloměry silné absorbce byly změřeny pro 19 jader.
Classification
Type
Jx - 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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Result continuities
Project
Continuities
Z - Vyzkumny zamer (s odkazem do CEZ)
Others
Publication year
2005
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
European Physical Journal A
ISSN
1434-6001
e-ISSN
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Volume of the periodical
25
Issue of the periodical within the volume
-
Country of publishing house
DE - GERMANY
Number of pages
4
Pages from-to
223-226
UT code for WoS article
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EID of the result in the Scopus database
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Basic information
Result type
Jx - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)
CEP
BG - Nuclear, atomic and molecular physics, accelerators
Year of implementation
2005