High-spin rotational structures in<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mmultiscripts><mml:mi mathvariant="normal">Kr</mml:mi><mml:mprescripts/><mml:none/><mml:mrow><mml:mn>76</mml:mn></mml:mrow></mml:mmultiscripts></mml:math>
J. J. Valiente‐DobónDepartment of Physics, University of Guelph, Guelph, Ontario N1G 2W1, CanadaC. E. SvenssonDepartment of Physics, University of Guelph, Guelph, Ontario N1G 2W1, CanadaC. D. O’LearyDepartment of Physics, University of York, Heslington, York YO10 5DD, United KingdomI. RagnarssonDepartment of Physics, Lund Institute of Technology, P.O. Box 118, S-221 00 Lund, SwedenC. AndreoiuDepartment of Physics, University of Guelph, Guelph, Ontario N1G 2W1, CanadaD. E. AppelbeCLRC Daresbury Laboratory, Daresbury, Warrington WA4 4AD, United KingdomR. A. E. AustinDepartment of Physics and Astronomy, McMaster University, Hamilton, Ontario L8S 4K1, CanadaG. C. BallTRIUMF, 4004 Wesbrook Mall, Vancouver, British Columbia V6T 2A3, CanadaJ. A. CameronDepartment of Physics and Astronomy, McMaster University, Hamilton, Ontario L8S 4K1, CanadaM. P. CarpenterPhysics Division, Argonne National Laboratory, Argonne, Illinois 60439R. M. ClarkLawrence Berkeley National Laboratory, Berkeley, California 94720M. CromazLawrence Berkeley National Laboratory, Berkeley, California 94720D. DashdorjNorth Carolina State University, Raleigh, North Carolina 27695P. FallonLawrence Berkeley National Laboratory, Berkeley, California 94720P. FinlayDepartment of Physics, University of Guelph, Guelph, Ontario N1G 2W1, CanadaS. J. FreemanPhysics Division, Argonne National Laboratory, Argonne, Illinois 60439P. E. GarrettDepartment of Physics, University of Guelph, Guelph, Ontario N1G 2W1, CanadaA. GörgenCEA Saclay, DAPNIA/SPhN, F-91191 Gif-sur-Yvette Cedex, FranceG. F. GrinyerDepartment of Physics, University of Guelph, Guelph, Ontario N1G 2W1, CanadaD. F. HodgsonTRIUMF, 4004 Wesbrook Mall, Vancouver, British Columbia V6T 2A3, CanadaB. HylandDepartment of Physics, University of Guelph, Guelph, Ontario N1G 2W1, CanadaD. G. JenkinsDepartment of Physics, University of York, Heslington, York YO10 5DD, United KingdomF. Johnston‐TheasbyDepartment of Physics, University of York, Heslington, York YO10 5DD, United KingdomP. K. JoshiDepartment of Physics, University of York, Heslington, York YO10 5DD, United KingdomN. S. KelsallDepartment of Physics, University of York, Heslington, York YO10 5DD, United KingdomA. O. MacchiavelliLawrence Berkeley National Laboratory, Berkeley, California 94720F. MoorePhysics Division, Argonne National Laboratory, Argonne, Illinois 60439G. MukherjeePhysics Division, Argonne National Laboratory, Argonne, Illinois 60439A. A. PhillipsDepartment of Physics, University of Guelph, Guelph, Ontario N1G 2W1, CanadaW. ReviolDepartment of Chemistry, Washington University, St. Louis, Missouri 63130D. G. SarantitesDepartment of Chemistry, Washington University, St. Louis, Missouri 63130M. A. SchumakerDepartment of Physics, University of Guelph, Guelph, Ontario N1G 2W1, CanadaD. SeweryniakPhysics Division, Argonne National Laboratory, Argonne, Illinois 60439M. B. SmithTRIUMF, 4004 Wesbrook Mall, Vancouver, British Columbia V6T 2A3, CanadaJ. C. WaddingtonDepartment of Physics and Astronomy, McMaster University, Hamilton, Ontario L8S 4K1, CanadaR. WadsworthDepartment of Physics, University of York, Heslington, York YO10 5DD, United KingdomD. WardLawrence Berkeley National Laboratory, Berkeley, California 94720Spencer J. WilliamsDepartment of Physics, University of Surrey, Guildford GU2 7XH, United Kingdom
ABI
Аннотация
High-spin states in ${^{36}_{76}\mathrm{Kr}}_{40}$ have been populated in the $^{40}\mathrm{Ca}$($^{40}\mathrm{Ca}$,4p)$^{76}\mathrm{Kr}$ fusion-evaporation reaction at a beam energy of 165 MeV and studied using the Gammasphere and Microball multidetector arrays. The ground-state band and two signature-split negative parity bands of $^{76}\mathrm{Kr}$ have been extended to $~30\ensuremath{\hbar}$. Lifetime measurements using the Doppler-shift attenuation method show that the transition quadrupole moment of these three bands decrease as they approach their maximum-spin states. Two signatures of a new rotational structure with remarkably rigid rotational behavior have been identified. The high-spin properties of these rotational bands are analyzed within the framework of configuration-dependent cranked Nilsson-Strutinsky calculations.
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