Identification of Excited States in the Tz=+1/2 Nucleus 75Rb: The Quest for Experimental Signatures of Collective Neutron-proton Correlations

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Identification of Excited States in the Tz=+1/2 Nucleus 75Rb: The Quest for Experimental Signatures of Collective Neutron-proton Correlations. / Gross, C. J.; Rudolph, Dirk; Satula, W.; Alexander, J.; Baktash, C.; ColemanSmith, P. J.; Cullen, D. M.; Cunningham, R. A.; Garrett, J. D.; Gelletly, W.; Harder, A.; Kabadiyski, M. K.; Lazarus, I.; Lieb, K. P.; Roth, H. A.; Sarantites, D. G.; Sheikh, J. A.; Simpson, J.; Skeppstedt, O.; Varley, B. J.; Warner, D. D.

In: Physical Review C (Nuclear Physics), Vol. 56, No. 2, 1997, p. R591-R595.

Research output: Contribution to journalArticle

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Gross, CJ, Rudolph, D, Satula, W, Alexander, J, Baktash, C, ColemanSmith, PJ, Cullen, DM, Cunningham, RA, Garrett, JD, Gelletly, W, Harder, A, Kabadiyski, MK, Lazarus, I, Lieb, KP, Roth, HA, Sarantites, DG, Sheikh, JA, Simpson, J, Skeppstedt, O, Varley, BJ & Warner, DD 1997, 'Identification of Excited States in the Tz=+1/2 Nucleus 75Rb: The Quest for Experimental Signatures of Collective Neutron-proton Correlations', Physical Review C (Nuclear Physics), vol. 56, no. 2, pp. R591-R595. https://doi.org/10.1103/PhysRevC.56.R591

APA

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Gross CJ, Rudolph D, Satula W, Alexander J, Baktash C, ColemanSmith PJ, Cullen DM, Cunningham RA, Garrett JD, Gelletly W, Harder A, Kabadiyski MK, Lazarus I, Lieb KP, Roth HA, Sarantites DG, Sheikh JA, Simpson J, Skeppstedt O, Varley BJ, Warner DD. 1997. Identification of Excited States in the Tz=+1/2 Nucleus 75Rb: The Quest for Experimental Signatures of Collective Neutron-proton Correlations. Physical Review C (Nuclear Physics). 56(2):R591-R595. https://doi.org/10.1103/PhysRevC.56.R591

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Gross, C. J. ; Rudolph, Dirk ; Satula, W. ; Alexander, J. ; Baktash, C. ; ColemanSmith, P. J. ; Cullen, D. M. ; Cunningham, R. A. ; Garrett, J. D. ; Gelletly, W. ; Harder, A. ; Kabadiyski, M. K. ; Lazarus, I. ; Lieb, K. P. ; Roth, H. A. ; Sarantites, D. G. ; Sheikh, J. A. ; Simpson, J. ; Skeppstedt, O. ; Varley, B. J. ; Warner, D. D. / Identification of Excited States in the Tz=+1/2 Nucleus 75Rb: The Quest for Experimental Signatures of Collective Neutron-proton Correlations. In: Physical Review C (Nuclear Physics). 1997 ; Vol. 56, No. 2. pp. R591-R595.

RIS

TY - JOUR

T1 - Identification of Excited States in the Tz=+1/2 Nucleus 75Rb: The Quest for Experimental Signatures of Collective Neutron-proton Correlations

AU - Gross, C. J.

AU - Rudolph, Dirk

AU - Satula, W.

AU - Alexander, J.

AU - Baktash, C.

AU - ColemanSmith, P. J.

AU - Cullen, D. M.

AU - Cunningham, R. A.

AU - Garrett, J. D.

AU - Gelletly, W.

AU - Harder, A.

AU - Kabadiyski, M. K.

AU - Lazarus, I.

AU - Lieb, K. P.

AU - Roth, H. A.

AU - Sarantites, D. G.

AU - Sheikh, J. A.

AU - Simpson, J.

AU - Skeppstedt, O.

AU - Varley, B. J.

AU - Warner, D. D.

N1 - 2

PY - 1997

Y1 - 1997

N2 - Excited states in the T-z-1/2 nucleus Rb-75 were observed for the first time using the Ca-40(Ca-40,alpha p) reaction at 128 MeV. Identification was achieved using events detected by the Daresbury recoil separator in coincidence with gamma rays detected in the 45 element EUROGAM I Ge-detector array. Threefold events were used to build a decay scheme which consists of two rotational bands observed to I-pi=(45+/2) and I-pi=(33-/2). The positive parity band in Rb-75 behaves similarly to a negative-parity band in Kr-74 and contains a region of alignment at (h) over bar omega approximate to 0.75 MeV. These data, and those of Sr-77, be interpreted by treating protons and neutrons separately in a cranked shell model approach despite a recent suggestion for the presence of T=1 neutron-proton pairing correlations in the neighboring self-conjugate, odd-odd Rb-74 ground state band. Our study suggests that some experimental observables such as the energy levels and moments of inertia, may not be able to differentiate between different T=1 pairing phases in these T-z=1/2 nuclei.

AB - Excited states in the T-z-1/2 nucleus Rb-75 were observed for the first time using the Ca-40(Ca-40,alpha p) reaction at 128 MeV. Identification was achieved using events detected by the Daresbury recoil separator in coincidence with gamma rays detected in the 45 element EUROGAM I Ge-detector array. Threefold events were used to build a decay scheme which consists of two rotational bands observed to I-pi=(45+/2) and I-pi=(33-/2). The positive parity band in Rb-75 behaves similarly to a negative-parity band in Kr-74 and contains a region of alignment at (h) over bar omega approximate to 0.75 MeV. These data, and those of Sr-77, be interpreted by treating protons and neutrons separately in a cranked shell model approach despite a recent suggestion for the presence of T=1 neutron-proton pairing correlations in the neighboring self-conjugate, odd-odd Rb-74 ground state band. Our study suggests that some experimental observables such as the energy levels and moments of inertia, may not be able to differentiate between different T=1 pairing phases in these T-z=1/2 nuclei.

U2 - 10.1103/PhysRevC.56.R591

DO - 10.1103/PhysRevC.56.R591

M3 - Article

VL - 56

SP - R591-R595

JO - Physical Review C: covering nuclear physics

T2 - Physical Review C: covering nuclear physics

JF - Physical Review C: covering nuclear physics

SN - 2469-9985

IS - 2

ER -