0101840 - UJF-V 20043007 RIV NL eng J - Článek v odborném periodiku
Dombradi, Z. - Sohler, D. - Sorlin, O. - Azaiez, F. - Nowacki, F. - Stanoiu, M. - Penionzhkevich, Y. E. - Timár, J. - Amorini, F. - Baiborodin, Dmitri - Bauchet, A. - Becker, F. - Belleguic, M. - Borcea, C. - Bourgeois, C. - Dlouhý, Zdeněk - Donzaud, C. - Duprat, J. - Elekes, Z. - Guillemaud-Mueller, D. - Ibrahim, F. - Lewitowicz, M. - Lopez, M. J. - Lucas, R. - Lukyanov, S. M. - Maslov, V. - Moore, C. - Saint Laurent, M. G. - Sarazin, E. - Scarpaci, J. A. - Sletten, G. - Stodel, C. - Taylor, M. - Theisen, C. - Voltolini, G.
Search for particle-hole excitations across the N=28 shell gap in Ar-45,Ar-46 nuclei.
[Hledání excitací částice - díra slupky N=28 jader Ar-45 a Ar-46.]
Nuclear Physics. A. Roč. 727, 3/4 (2003), s. 195-206. ISSN 0375-9474. E-ISSN 1873-1554
Grant CEP: GA AV ČR IAA1048102
Výzkumný záměr: CEZ:AV0Z1048901
Klíčová slova: particle-hole excitations * N=28 shell
Kód oboru RIV: BG - Jaderná, atomová a mol. fyzika, urychlovače
Impakt faktor: 1.761, rok: 2003

The structure of the N similar or equal to 28 Ar-45,46(18)27,28 nuclei has been investigated through in-beam gamma-ray spectroscopy using the fragmentation reaction of a 60 A MeV Ca-48 beam on a thin Be target. gamma-ray energies, intensities, gamma gamma coincidences and gamma-ray angular anisotropies have been measured. The level scheme of Ar-45 is proposed for the first time, while that of Ar-46 has been extended to states above the previously known 2(+) first excited state. An isomeric state at 537 keV of 0.34(-0.15)(+0.32) -0.15 ns lifetime has been found in Ar-45 from the line-shape analysis of the gamma ray connecting the first excited state to the ground state. The experimental results are interpreted using shell-model calculations.

Struktura slupek s N=28 a podobných byla studována v reakcích 60 A MeV Ca-48 na tenkém Be terči. Poprvé bylo navrženo schéma hladin pro Ar-45. Pro Ar-46 byly nalezeny nové hladiny ležící nad dosud známými.

Trvalý link: http://hdl.handle.net/11104/0009233