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1

Digitale Medien

127Ce levels populated in the 4.2 s127Pr beta-decay (1995)

Gizon, A. ; Genevey, J. ; Barnéoud, D. ; [weitere]

Springer

The European physical journal 351 (1995), S. 361-362

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ISSN: 1434-601X

Schlagwort(e): 23.20.Lv ; 27.60.+j

Quelle: Springer Online Journal Archives 1860-2000

Thema: Physik

Notizen: Abstract From new measurements, a half-live of 4.2±0.3 s has been clearly established in127Pr. This value confirms our first result [4] and rules out other data [5]. The127Pr activity was produced by bombarding92Mo or94Mo targets with 210 MeV40Ca beams. The mass identification has been made using an ion-guide coupled with an on-line isotope separator. The partial level scheme proposed for127Ce has been deduced from β-gated γ spectra and Xγ- and γγ-coincidences. A new band structure based on a 1/2+ state is established.

Materialart: Digitale Medien

URL: http://dx.doi.org/10.1007/BF01291139

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2

Digitale Medien

First observation of low lying states in the doubly odd nucleus132Pr from beta decay of132Nd (1994)

Bucurescu, D. ; Barnéoud, D. ; Béraud, R. ; [weitere]

Springer

The European physical journal 349 (1994), S. 3-4

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ISSN: 1434-601X

Schlagwort(e): 23.20.Lv ; 27.60.+j

Quelle: Springer Online Journal Archives 1860-2000

Thema: Physik

Notizen: Abstract The lowlying level scheme of the oddodd nucleus132Pr has been investigated for the first time. The radioactive nuclei were produced by bombarding96Mo targets with 225 MeV40Ca beam. Levels have been populated from the132Nd β- decay. A new value of its halflife has been measured: T1/2=88±7 s. The mass identification has been made with an ionguide coupled with an online isotope separator. γ- γ- t, X-γ-t and e−-γ-t coincidence measurements have been performed. The observed distribution of the level feedings is similar to that of the neighbouring odd-odd nuclei.

Materialart: Digitale Medien

URL: http://dx.doi.org/10.1007/BF01296324

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3

Digitale Medien

The alpha decay study of223Th (T 1/2=0.6 s) (1992)

Liang, C. F. ; Paris, P. ; Gizon, A. ; [weitere]

Springer

The European physical journal 341 (1992), S. 401-406

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ISSN: 1434-601X

Schlagwort(e): 21.10.Hw ; 23.20.Lv ; 23.60.te

Quelle: Springer Online Journal Archives 1860-2000

Thema: Physik

Notizen: Abstract The219Ra levels, fed by the α-decay of223Th, have been studied by anα−γ coincidence experiment. AK=1/2+ band, based on the 7/2+ ground state, with a large decoupling parameter a=−5.5 is proposed. Three levels with spins 5/2, 9/2, 7/2 and lowα-hindrance factors around 140 keV, can be considered as members of aK=5/2+ band, perturbed by the Coriolis coupling of configurations arising from theg9/2 shell. TheseK =1/2+ and 5/2+ orbitals are expected forN=131 in the reflection asymmetry model with ɛ2≃ɛ3−0.1. How-ever no evidence was found for the corresponding negative parity bands in this transitional nucleus.

Materialart: Digitale Medien

URL: http://dx.doi.org/10.1007/BF01301383

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4

Digitale Medien

Excited states of 154Tm (2002)

Foin, C. ; Gizon, A. ; Genevey, J. ; [weitere]

Springer

The European physical journal 14 (2002), S. 7-11

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ISSN: 1434-601X

Schlagwort(e): PACS. 21.10.Pc Single-particle levels and strength functions – 23.20.Lv Gamma transitions and level energies – 27.70.+q 150 ?A? 189

Quelle: Springer Online Journal Archives 1860-2000

Thema: Physik

Notizen: Abstract: A high-spin level structure of the nucleus 154Tm has been established for the first time up to 6.14 MeV. The 118Sn + 40Ca reaction at 205 MeV associated with the recoil shadow method was used to identify the I π = (19)+ isomeric state at 2.74 MeV. In-beam γ-ray and conversion electron spectroscopy have been applied on the 144Sm(14N, 4n)154Tm reaction at 95 MeV to build the level scheme. The level structure of 154Tm is compared to other structures observed in N = 85 neighbouring nuclei.

Materialart: Digitale Medien

URL: http://dx.doi.org/10.1140/epja/iepja1363

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5

Digitale Medien

Non-yrast level structure of121Xe via beta decay of121m+g Cs (1991)

Genevey, J. ; Gizon, A. ; Marguier, G. ; [weitere]

Springer

The European physical journal 338 (1991), S. 405-415

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ISSN: 1434-601X

Schlagwort(e): 23.20.Lv ; 23-20.Nx ; 27.60.+j

Quelle: Springer Online Journal Archives 1860-2000

Thema: Physik

Notizen: Abstract The results of measurements of the gamma-ray and conversion-electron singles and coincidence spectra from the decay of the 122 s121m Cs and the 155 s121g Cs to levels of121Xe are reported. TheM 3 multipolarity of the 68.5 keV isomeric transition in121Cs has been deduced. Numerous low-lying levels below 1.6 MeV excitation energy are found. A negative-parity level at 355.9 keV is observed for the first time. The results supplement the low lying energy level systematics in odd-A xenons. A comparison is made with theN=67 barium isotone.

Materialart: Digitale Medien

URL: http://dx.doi.org/10.1007/BF01295768

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6

Digitale Medien

124Ba Decay to the 55 124 Cs69 low-spin levels (1986)

Weiss, B. ; Gizon, A. ; Liang, C. F. ; [weitere]

Springer

The European physical journal 323 (1986), S. 227-244

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ISSN: 1434-601X

Schlagwort(e): 23.20.Lv ; 28.60.+s

Quelle: Springer Online Journal Archives 1860-2000

Thema: Physik

Notizen: Abstract The decay of124Ba to the levels of odd-odd124Cs has been studied with on-line mass-separated sources delivered at the Isocele facility. The energy level scheme has been established fromγ-ray singles,γ−γ−t coincidence ande−γ−t coincidence spectra. Spin and parity of several low-lying levels have been assigned on the basis of internal conversion coefficient measurements andβ-branchings. A completely new level pattern including approximately 50 levels and 180γ-rays is proposed for124Cs. Several features of this level scheme are discussed and compared to those of neighbouring isotopes.

Materialart: Digitale Medien

URL: http://dx.doi.org/10.1007/BF01290317

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7

Digitale Medien

Conversion electron measurements in the124Laβ-decay. Spin and parity assignments in124Ba (1992)

Idrissi, N. ; Gizon, A. ; Genevey, J. ; [weitere]

Springer

The European physical journal 341 (1992), S. 427-433

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ISSN: 1434-601X

Schlagwort(e): 23.20.Lv ; 23.20.Nx ; 27.60. + j

Quelle: Springer Online Journal Archives 1860-2000

Thema: Physik

Notizen: Abstract Low-lying energy levels in124Ba have been investigated from124Laβ-decay by using He-jet technique. Spin and parity assignments have been deduced from internal conversion electron measurements. Aβ-vibrational band based on a second 0+ state has been identified. Experimental level energies have been compared with IBFA-2 calculations.

Materialart: Digitale Medien

URL: http://dx.doi.org/10.1007/BF01301386

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8

Digitale Medien

Level structure of Cs observed from Ba decay and described using the IBFM and CQPC models (2000)

Gizon, A. ; Weiss, B. ; Paris, P. ; [weitere]

Springer

The European physical journal 8 (2000), S. 41-58

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ISSN: 1434-601X

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

Quelle: Springer Online Journal Archives 1860-2000

Thema: Physik

Notizen: Abstract: The decay of 123Ba to 123Cs has been studied with mass-separated sources. Singles spectra of -rays, X-rays and conversion electrons as well as , , and X-e-t coincidences were recorded. A level scheme of 123Cs has been constructed including 26 new excited states and 82 transitions. The existence of a I =11/2-, T =1.7 s isomer, bandhead of the h band, is confirmed. Its excitation energy equals 156.3 keV. A new T =114 ns isomer has been established at 232 keV using the in-beam recoil catcher technique. It is assigned to the I =9/2+ bandhead of the g band. Collective bands based on the 1/2+ ground state and first 3/2+ excited state are proposed. The level structure is described in the frame of the interacting boson-fermion and core-quasiparticle coupling models.

Materialart: Digitale Medien

URL: http://dx.doi.org/10.1007/s100530050007

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