Evidence of nontermination of collective rotation near the maximum angular momentum in {sup 75}Rb

Davies, P J; Wadsworth, R; Jenkins, D G; Johnston-Theasby, F L; Joshi, P; Afanasjev, A V; Andreoiu, C; Finlay, P; Garrett, P E; Grinyer, G F; Hyland, B; Phillips, A A; Schumaker, M A; Svensson, C E; Valiente-Dobon, J J; Austin, R A. E.; Carpenter, M P; Greene, J; Moore, F; Mukherjee, G

doi:10.1103/PHYSREVC.82.061303

Title: Evidence of nontermination of collective rotation near the maximum angular momentum in {sup 75}Rb

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Abstract

Two of the four known rotational bands in {sup 75}Rb were studied via the {sup 40}Ca({sup 40}Ca,{alpha}p){sup 75}Rb reaction at a beam energy of 165 MeV. Transitions were observed up to the maximum spin I{sub max} of the assigned configuration in one case and one-transition short of I{sub max} in the other. Lifetimes were determined using the residual Doppler shift attenuation method. The deduced transition quadrupole moments show a small decrease with increasing spin, but remain large at the highest spins. The results obtained are in good agreement with cranked Nilsson-Strutinsky calculations, which indicate that these rotational bands do not terminate, but remain collective at I{sub max}.

Authors:

Davies, P J; Wadsworth, R; Jenkins, D G; Johnston-Theasby, F L; Joshi, P ^[1]; Afanasjev, A V ^[2]; Andreoiu, C; Finlay, P; Garrett, P E; Grinyer, G F; Hyland, B; Phillips, A A; Schumaker, M A; Svensson, C E; Valiente-Dobon, J J ^[3]; Austin, R A. E. ^[4]; Carpenter, M P; Greene, J; Moore, F; Mukherjee, G ^[5]

Department of Physics, University of York, Heslington, York YO10 5DD (United Kingdom)
Department of Physics and Astronomy, Mississippi State University, Mississippi 39762 (United States)
Department of Physics, University of Guelph, Guelph, Ontario N1G 2W1 (Canada)
Department Physics and Astronomy, McMaster University, Hamilton, Ontario L8S 4K1 (Canada)
Physics Division, Argonne National Laboratory, 9700 South Cass Avenue, Argonne, Illinois 60439 (United States)

Publication Date:: Wed Dec 15 00:00:00 EST 2010

OSTI Identifier:: 21499241

Resource Type:: Journal Article

Journal Name:: Physical Review. C, Nuclear Physics

Additional Journal Information:: Journal Volume: 82; Journal Issue: 6; Other Information: DOI: 10.1103/PhysRevC.82.061303; (c) 2010 The American Physical Society; Journal ID: ISSN 0556-2813

Country of Publication:: United States

Language:: English

Subject:: 73 NUCLEAR PHYSICS AND RADIATION PHYSICS; ALPHA DECAY; BEAMS; CALCIUM 40 REACTIONS; CALCIUM 40 TARGET; CONFIGURATION; DSA METHOD; LIFETIME; MEV RANGE 100-1000; PROTON-EMISSION DECAY; QUADRUPOLE MOMENTS; ROTATIONAL STATES; RUBIDIUM 75; SPIN; ANGULAR MOMENTUM; BETA DECAY RADIOISOTOPES; BETA-PLUS DECAY RADIOISOTOPES; COUNTING TECHNIQUES; DECAY; ENERGY LEVELS; ENERGY RANGE; EXCITED STATES; HEAVY ION REACTIONS; INTERMEDIATE MASS NUCLEI; ISOTOPES; MEV RANGE; NUCLEAR DECAY; NUCLEAR REACTIONS; NUCLEI; ODD-EVEN NUCLEI; PARTICLE PROPERTIES; RADIOISOTOPES; RUBIDIUM ISOTOPES; SECONDS LIVING RADIOISOTOPES; TARGETS

Citation Formats


                    Davies, P J, Wadsworth, R, Jenkins, D G, Johnston-Theasby, F L, Joshi, P, Afanasjev, A V, Laboratory of Radiation Physics, Institute of Solid State Physics, University of Latvia, LV-2169 Salaspils, Miera strasse 31, Andreoiu, C, Finlay, P, Garrett, P E, Grinyer, G F, Hyland, B, Phillips, A A, Schumaker, M A, Svensson, C E, Valiente-Dobon, J J, Austin, R A. E., Carpenter, M P, Greene, J, Moore, F, and Mukherjee, G. Evidence of nontermination of collective rotation near the maximum angular momentum in {sup 75}Rb.  United States: N. p., 2010. 
        Web.  doi:10.1103/PHYSREVC.82.061303.

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                    Davies, P J, Wadsworth, R, Jenkins, D G, Johnston-Theasby, F L, Joshi, P, Afanasjev, A V, Laboratory of Radiation Physics, Institute of Solid State Physics, University of Latvia, LV-2169 Salaspils, Miera strasse 31, Andreoiu, C, Finlay, P, Garrett, P E, Grinyer, G F, Hyland, B, Phillips, A A, Schumaker, M A, Svensson, C E, Valiente-Dobon, J J, Austin, R A. E., Carpenter, M P, Greene, J, Moore, F, & Mukherjee, G. Evidence of nontermination of collective rotation near the maximum angular momentum in {sup 75}Rb.  United States.  https://doi.org/10.1103/PHYSREVC.82.061303

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                    Davies, P J, Wadsworth, R, Jenkins, D G, Johnston-Theasby, F L, Joshi, P, Afanasjev, A V, Laboratory of Radiation Physics, Institute of Solid State Physics, University of Latvia, LV-2169 Salaspils, Miera strasse 31, Andreoiu, C, Finlay, P, Garrett, P E, Grinyer, G F, Hyland, B, Phillips, A A, Schumaker, M A, Svensson, C E, Valiente-Dobon, J J, Austin, R A. E., Carpenter, M P, Greene, J, Moore, F, and Mukherjee, G. 2010.  
        "Evidence of nontermination of collective rotation near the maximum angular momentum in {sup 75}Rb".  United States.  https://doi.org/10.1103/PHYSREVC.82.061303.

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@article{osti_21499241,

  title        = {Evidence of nontermination of collective rotation near the maximum angular momentum in {sup 75}Rb},

  author       = {Davies, P J and Wadsworth, R and Jenkins, D G and Johnston-Theasby, F L and Joshi, P and Afanasjev, A V and Laboratory of Radiation Physics, Institute of Solid State Physics, University of Latvia, LV-2169 Salaspils, Miera strasse 31 and Andreoiu, C and Finlay, P and Garrett, P E and Grinyer, G F and Hyland, B and Phillips, A A and Schumaker, M A and Svensson, C E and Valiente-Dobon, J J and Austin, R A. E. and Carpenter, M P and Greene, J and Moore, F and Mukherjee, G},

  abstractNote = {Two of the four known rotational bands in {sup 75}Rb were studied via the {sup 40}Ca({sup 40}Ca,{alpha}p){sup 75}Rb reaction at a beam energy of 165 MeV. Transitions were observed up to the maximum spin I{sub max} of the assigned configuration in one case and one-transition short of I{sub max} in the other. Lifetimes were determined using the residual Doppler shift attenuation method. The deduced transition quadrupole moments show a small decrease with increasing spin, but remain large at the highest spins. The results obtained are in good agreement with cranked Nilsson-Strutinsky calculations, which indicate that these rotational bands do not terminate, but remain collective at I{sub max}.},

  doi          = {10.1103/PHYSREVC.82.061303},

  url          = {https://www.osti.gov/biblio/21499241},
  journal      = {Physical Review. C, Nuclear Physics},

  issn         = {0556-2813},

  number       = 6,

  volume       = 82,

  place        = {United States},

  year         = {Wed Dec 15 00:00:00 EST 2010},

  month        = {Wed Dec 15 00:00:00 EST 2010}

}

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