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Digitale Medien

Gamma-spectroscopy of the 199At nucleus with the Recoil Filter Detector (1998)

Męczyński, W. ; Bednarczyk, P. ; Chapman, R. ; [weitere]

Springer

The European physical journal 3 (1998), S. 311-312

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ISSN: 1434-601X

Schlagwort(e): PACS:23.20.Lv Gamma transitions and level energies – 27.80.+w 190 ≤ A ≤ 219 – 29.40.Ym Other detectors

Quelle: Springer Online Journal Archives 1860-2000

Thema: Physik

Notizen: Abstract. The neutron deficient 199At nucleus has been studied in the 175Lu+28Si reaction at Eb= 141 MeV. In order to select events of interest in the presence of the very strong background caused by fission, γ-rays have been detected in coincidence with recoiling evaporation residues. The excited states of 199At observed for the first time may indicate that this nucleus is deformed.

Materialart: Digitale Medien

URL: http://dx.doi.org/10.1007/s100500050184

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Digitale Medien

Investigation of prolate-oblate shape-coexistence in 74Kr (1999)

Becker, F. ; Korten, W. ; Hannachi, F. ; [weitere]

Springer

The European physical journal 4 (1999), S. 103-105

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ISSN: 1434-601X

Schlagwort(e): PACS:21.10.Tg Lifetimes – 23.20.Lv Gamma transitions and level energies – 23.20.Nx Internal conversion and extranuclear effects – 25.70.Gh Compound nucleus – 27.50.+e 59 A 89

Quelle: Springer Online Journal Archives 1860-2000

Thema: Physik

Notizen: Abstract: The atomic nucleus 74Kr has been investigated using combined conversion-electron (CE) and γ-ray spectroscopy. In order to confirm the existence of the expected low-lying isomeric 0+ 2 state, the possibility of an electric-monopole (E0) decay to the ground state was examined. The observation of an E0 transition at 508 keV allowed the determination of the mixing between coexisting prolate and oblate shapes.

Materialart: Digitale Medien

URL: http://dx.doi.org/10.1007/s100500050209

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Digitale Medien

Configuration assignments and decay of 126La high-spin bands (2000)

Timár, J. ; Gizon, A. ; Paris, P. ; [weitere]

Springer

The European physical journal 7 (2000), S. 7-10

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ISSN: 1434-601X

Schlagwort(e): PACS: 21.10.Re Collective levels – 23.20.Lv Gamma transitions and level energies – 21.60.Ev Collective models – 27.60.+j 90 ≤ A ≤ 149

Quelle: Springer Online Journal Archives 1860-2000

Thema: Physik

Notizen: Abstract: High spin states of 126La have been populated using the reaction 116Sn+14N at 68 MeV. γ-rays and conversion electrons were detected with the GAREL array. Multipolarities of the lowest-lying in-band dipole transitions have been determined from the deduced internal conversion coefficients. Experimental B(M1)/B(E2) ratios have been derived for the bands and compared with calculated values using the Dönau-Frauendorf geometrical model. Configurations are proposed for the bands comparing them with cranked shell model calculations and on the basis of the measured B(M1)/B(E2) ratios. The β-decay of 126La has also been revisited. The population of the 126Ba levels gives a probable spin value of five for the decaying high-spin 126La state with T 1/2≈ 64 s which may indicate a signature inversion in the πh11/2νh11/2 band.

Materialart: Digitale Medien

URL: http://dx.doi.org/10.1007/s100500050002

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