Lifetime measurements in N=Z Kr-72

C. Andreoiu; C. E. Svensson; R. A. E. Austin; M. P. Carpenter; D. Dashdorj; P. Finlay; S. J. Freeman; P. E. Garrett; A. Gorgen; J. Greene; G. F. Grinyer; B. Hyland; D. Jenkins; F. Johnston-Theasby; P. Joshi; A. O. Machiavelli; F. Moore; G. Mukherjee; A. A. Phillips; W. Reviol; D. G. Sarantites; M. A. Schumaker; D. Seweryniak; M. B. Smith; J. J. Valiente-Dobon; R. Wadsworth

doi:10.1088/0031-8949/2006/T125/029

Lifetime measurements in N=Z Kr-72

C. Andreoiu, C. E. Svensson, R. A. E. Austin, M. P. Carpenter, D. Dashdorj, P. Finlay, S. J. Freeman, P. E. Garrett, A. Gorgen, J. Greene, G. F. Grinyer, B. Hyland, D. Jenkins, F. Johnston-Theasby, P. Joshi, A. O. Machiavelli, F. Moore, G. Mukherjee, A. A. Phillips, W. ReviolD. G. Sarantites, M. A. Schumaker, D. Seweryniak, M. B. Smith, J. J. Valiente-Dobon, R. Wadsworth

Physics

Research output: Contribution to journal › Article › peer-review

Abstract

High-spin states in the N = Z nucleus Kr-72 have been populated in the Ca-40(Ca-40, 2 alpha) Kr-72 fusion-evaporation reaction at a beam energy of 165MeV and using a thin isotopically enriched 40Ca target. The experiment, performed at Argonne National Laboratory close to Chicago, USA, employed the Gammasphere array for gamma-ray detection coupled to the Microball array for charged particle detection. The previously observed bands in 72Kr were extended to a higher excitation energy of similar to 24MeV and higher angular momentum of 30h. Using the Doppler-shift attenuation method, the lifetimes of high-spin states were measured for the first time in order to investigate deformation changes associated with the g(9/2) proton and neutron alignments in this N = Z nucleus. An excellent agreement with theoretical calculations including only standard t = 1 np pairing was observed.

Original language	English
Pages (from-to)	127-129
Number of pages	3
Journal	Physica Scripta
Volume	T125
DOIs	https://doi.org/10.1088/0031-8949/2006/T125/029
Publication status	Published - Jul 2006

Keywords

RESPONSE CHARACTERISTICS
GAMMASPHERE

Access to Document

10.1088/0031-8949/2006/T125/029

Cite this

Andreoiu, C., Svensson, C. E., Austin, R. A. E., Carpenter, M. P., Dashdorj, D., Finlay, P., Freeman, S. J., Garrett, P. E., Gorgen, A., Greene, J., Grinyer, G. F., Hyland, B., Jenkins, D., Johnston-Theasby, F., Joshi, P., Machiavelli, A. O., Moore, F., Mukherjee, G., Phillips, A. A., ... Wadsworth, R. (2006). Lifetime measurements in N=Z Kr-72. Physica Scripta, T125, 127-129. https://doi.org/10.1088/0031-8949/2006/T125/029

@article{d59cec4bfc2f4368a0bdeffa8df1e9b6,

title = "Lifetime measurements in N=Z Kr-72",

abstract = "High-spin states in the N = Z nucleus Kr-72 have been populated in the Ca-40(Ca-40, 2 alpha) Kr-72 fusion-evaporation reaction at a beam energy of 165MeV and using a thin isotopically enriched 40Ca target. The experiment, performed at Argonne National Laboratory close to Chicago, USA, employed the Gammasphere array for gamma-ray detection coupled to the Microball array for charged particle detection. The previously observed bands in 72Kr were extended to a higher excitation energy of similar to 24MeV and higher angular momentum of 30h. Using the Doppler-shift attenuation method, the lifetimes of high-spin states were measured for the first time in order to investigate deformation changes associated with the g(9/2) proton and neutron alignments in this N = Z nucleus. An excellent agreement with theoretical calculations including only standard t = 1 np pairing was observed.",

keywords = "RESPONSE CHARACTERISTICS, GAMMASPHERE",

author = "C. Andreoiu and Svensson, {C. E.} and Austin, {R. A. E.} and Carpenter, {M. P.} and D. Dashdorj and P. Finlay and Freeman, {S. J.} and Garrett, {P. E.} and A. Gorgen and J. Greene and Grinyer, {G. F.} and B. Hyland and D. Jenkins and F. Johnston-Theasby and P. Joshi and Machiavelli, {A. O.} and F. Moore and G. Mukherjee and Phillips, {A. A.} and W. Reviol and Sarantites, {D. G.} and Schumaker, {M. A.} and D. Seweryniak and Smith, {M. B.} and Valiente-Dobon, {J. J.} and R. Wadsworth",

year = "2006",

month = jul,

doi = "10.1088/0031-8949/2006/T125/029",

language = "English",

volume = "T125",

pages = "127--129",

journal = "Physica Scripta",

issn = "0031-8949",

publisher = "IOP Publishing",

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Andreoiu, C, Svensson, CE, Austin, RAE, Carpenter, MP, Dashdorj, D, Finlay, P, Freeman, SJ, Garrett, PE, Gorgen, A, Greene, J, Grinyer, GF, Hyland, B, Jenkins, D, Johnston-Theasby, F, Joshi, P, Machiavelli, AO, Moore, F, Mukherjee, G, Phillips, AA, Reviol, W, Sarantites, DG, Schumaker, MA, Seweryniak, D, Smith, MB, Valiente-Dobon, JJ & Wadsworth, R 2006, 'Lifetime measurements in N=Z Kr-72', Physica Scripta, vol. T125, pp. 127-129. https://doi.org/10.1088/0031-8949/2006/T125/029

TY - JOUR

T1 - Lifetime measurements in N=Z Kr-72

AU - Andreoiu, C.

AU - Svensson, C. E.

AU - Austin, R. A. E.

AU - Carpenter, M. P.

AU - Dashdorj, D.

AU - Finlay, P.

AU - Freeman, S. J.

AU - Garrett, P. E.

AU - Gorgen, A.

AU - Greene, J.

AU - Grinyer, G. F.

AU - Hyland, B.

AU - Jenkins, D.

AU - Johnston-Theasby, F.

AU - Joshi, P.

AU - Machiavelli, A. O.

AU - Moore, F.

AU - Mukherjee, G.

AU - Phillips, A. A.

AU - Reviol, W.

AU - Sarantites, D. G.

AU - Schumaker, M. A.

AU - Seweryniak, D.

AU - Smith, M. B.

AU - Valiente-Dobon, J. J.

AU - Wadsworth, R.

PY - 2006/7

Y1 - 2006/7

N2 - High-spin states in the N = Z nucleus Kr-72 have been populated in the Ca-40(Ca-40, 2 alpha) Kr-72 fusion-evaporation reaction at a beam energy of 165MeV and using a thin isotopically enriched 40Ca target. The experiment, performed at Argonne National Laboratory close to Chicago, USA, employed the Gammasphere array for gamma-ray detection coupled to the Microball array for charged particle detection. The previously observed bands in 72Kr were extended to a higher excitation energy of similar to 24MeV and higher angular momentum of 30h. Using the Doppler-shift attenuation method, the lifetimes of high-spin states were measured for the first time in order to investigate deformation changes associated with the g(9/2) proton and neutron alignments in this N = Z nucleus. An excellent agreement with theoretical calculations including only standard t = 1 np pairing was observed.

AB - High-spin states in the N = Z nucleus Kr-72 have been populated in the Ca-40(Ca-40, 2 alpha) Kr-72 fusion-evaporation reaction at a beam energy of 165MeV and using a thin isotopically enriched 40Ca target. The experiment, performed at Argonne National Laboratory close to Chicago, USA, employed the Gammasphere array for gamma-ray detection coupled to the Microball array for charged particle detection. The previously observed bands in 72Kr were extended to a higher excitation energy of similar to 24MeV and higher angular momentum of 30h. Using the Doppler-shift attenuation method, the lifetimes of high-spin states were measured for the first time in order to investigate deformation changes associated with the g(9/2) proton and neutron alignments in this N = Z nucleus. An excellent agreement with theoretical calculations including only standard t = 1 np pairing was observed.

KW - RESPONSE CHARACTERISTICS

KW - GAMMASPHERE

U2 - 10.1088/0031-8949/2006/T125/029

DO - 10.1088/0031-8949/2006/T125/029

M3 - Article

SN - 0031-8949

VL - T125

SP - 127

EP - 129

JO - Physica Scripta

JF - Physica Scripta

ER -