Study of mixed-symmetry excitations in 96Ru via inelastic proton-scattering

11th International Spring Seminar on Nuclear Physics: Shell Model and Nuclear Structure – achievements of the past two decades

Hennig, A.^1 ; Spieker, M.^1 ; Werner, V.^2,3 ; Ahn, T.^2,4 ; Anagnostatou, V.^2,5 ; Cooper, N.^2 ; Derya, V.^1 ; Elvers, M.^1,2 ; Endres, J.^1 ; Goddard, P.^2,5 ; Heinz, A.^2,6 ; Hughes, R.O.^2,7 ; Ilie, G.^2,8 ; Mineva, M.N.^9 ; Pickstone, S.G.^1 ; Petkov, P.^1,9 ; Radeck, D.^1,2 ; Ross, T.^5,7 ; Savran, D.^10,11 ; Zilges, A.^1

Institut für Kernphysik, Universität zu Köln, Köln

D-50937, Germany^1

Wright Nuclear Structure Laboratory, Yale University, New Haven

CT

06520, United States^2

Institut für Kernphysik, Technische Universität Darmstadt, Darmstadt

D-64289, Germany^3

National Superconducting Cyclotron Laboratory NSCL, Michigan State University, East Lansing

MI

48824, United States^4

Department of Physics, University of Surrey, Guildford

GU2 7XH, United Kingdom^5

Fundamental Fysik, Chalmers Tekniska Högskola, Göteborg

SE-41296, Sweden^6

University of Richmond, Richmond

VA

23173, United States^7

National Institute for Physics and Nuclear Engineering, Bucharest-Magurele

RO-77125, Romania^8

Institute for Nuclear Research and Nuclear Energy, Bulgarian Academy of Sciences, Sofia

BG-1784, Bulgaria

(10) ExtreMe Matter Institute EMMI and Research Division, GSI, Darmstadt

D-64291, Germany

(11) Frankfurt Institute for Advanced Studies FIAS, Frankfurt a.M.

D-60438, Germany^9

关键词: Hexadecapole;    Mixed symmetry state;    Nuclear structure;    Proton scattering;    Transition strengths;    Yale University;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/580/1/012022/pdf
DOI  :  10.1088/1742-6596/580/1/012022

来源: IOP

【 摘 要 】

Mixed-symmetry states of octupole (L 3) and hexadecapole (L 4) character have been recently proposed in the N 52 isotones92Zr and94Mo, based on strong M1 transitions to the lowest-lying 3-and 4+states, respectively. In order to investigate similar excitations in the heaviest stable N 52 isotone96Ru, two inelastic proton-scattering experiments have been performed at the Wright Nuclear Structure Laboratory (WNSL), Yale University, USA and the Institute for Nuclear Physics, University of Cologne, Germany. From the combined data of both experiments, absolute E1, M1, and E2 transition strengths were extracted, allowing for the identification of candidates for MS octupole and hexadecapole states. The structure of the low-lying 4+states is investigated by means of sdg-IBM-2 calculations.