Proton-neutron structure of the N=52 nucleus Zr-92

V Werner, D Belic, P von Brentano, C Fransen, A Gade, H von Garrel, J Jolie, U Kneissl, C Kohstall, A Linnemann, AF Lisetskiy, N Pietralla, HH Pitz, M Scheck, KH Speidel, F Stedile, SW Yates

Research output: Contribution to journalArticle

Abstract

Following the successful identification of mixed-symmetric one- and two-phonon states in the N=52 nuclei 94Mo and 96Ru, we have performed a photon scattering experiment on the N=52 isotone 92Zr. Experimental data and shell model calculations show that both, single particle and collective degrees of freedom are present in the low-lying levels of 92Zr. The second excited quadrupole state shows the signatures of the one-phonon mixed-symmetric 2+ state, while calculations and data indicate an almost pure neutron configuration for the 2+1 state, in contradiction with the F-spin symmetric limit. Furthermore, two strong dipole excitations, which are candidates for the two-phonon quadrupole–octupole coupled E1 excitation and for the mixed-symmetric 1+ two-phonon state, were observed.
Original languageEnglish
Pages (from-to)140-146
JournalPhysics Letters B
Volume550
Issue number3-4
DOIs
Publication statusPublished - 19 Dec 2002
Externally publishedYes

Keywords

  • Zr-92
  • NRF
  • (gamma, gamma ')
  • shell model
  • mixed symmetry
  • IBM
  • A=92

Cite this

Werner, V., Belic, D., von Brentano, P., Fransen, C., Gade, A., von Garrel, H., ... Yates, SW. (2002). Proton-neutron structure of the N=52 nucleus Zr-92. Physics Letters B, 550(3-4), 140-146. https://doi.org/10.1016/S0370-2693(02)02961-1
Werner, V ; Belic, D ; von Brentano, P ; Fransen, C ; Gade, A ; von Garrel, H ; Jolie, J ; Kneissl, U ; Kohstall, C ; Linnemann, A ; Lisetskiy, AF ; Pietralla, N ; Pitz, HH ; Scheck, M ; Speidel, KH ; Stedile, F ; Yates, SW. / Proton-neutron structure of the N=52 nucleus Zr-92. In: Physics Letters B. 2002 ; Vol. 550, No. 3-4. pp. 140-146.
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abstract = "Following the successful identification of mixed-symmetric one- and two-phonon states in the N=52 nuclei 94Mo and 96Ru, we have performed a photon scattering experiment on the N=52 isotone 92Zr. Experimental data and shell model calculations show that both, single particle and collective degrees of freedom are present in the low-lying levels of 92Zr. The second excited quadrupole state shows the signatures of the one-phonon mixed-symmetric 2+ state, while calculations and data indicate an almost pure neutron configuration for the 2+1 state, in contradiction with the F-spin symmetric limit. Furthermore, two strong dipole excitations, which are candidates for the two-phonon quadrupole–octupole coupled E1 excitation and for the mixed-symmetric 1+ two-phonon state, were observed.",
keywords = "Zr-92, NRF, (gamma, gamma '), shell model, mixed symmetry, IBM, A=92",
author = "V Werner and D Belic and {von Brentano}, P and C Fransen and A Gade and {von Garrel}, H and J Jolie and U Kneissl and C Kohstall and A Linnemann and AF Lisetskiy and N Pietralla and HH Pitz and M Scheck and KH Speidel and F Stedile and SW Yates",
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Werner, V, Belic, D, von Brentano, P, Fransen, C, Gade, A, von Garrel, H, Jolie, J, Kneissl, U, Kohstall, C, Linnemann, A, Lisetskiy, AF, Pietralla, N, Pitz, HH, Scheck, M, Speidel, KH, Stedile, F & Yates, SW 2002, 'Proton-neutron structure of the N=52 nucleus Zr-92' Physics Letters B, vol. 550, no. 3-4, pp. 140-146. https://doi.org/10.1016/S0370-2693(02)02961-1

Proton-neutron structure of the N=52 nucleus Zr-92. / Werner, V; Belic, D; von Brentano, P; Fransen, C; Gade, A; von Garrel, H; Jolie, J; Kneissl, U; Kohstall, C; Linnemann, A; Lisetskiy, AF; Pietralla, N; Pitz, HH; Scheck, M; Speidel, KH; Stedile, F; Yates, SW.

In: Physics Letters B, Vol. 550, No. 3-4, 19.12.2002, p. 140-146.

Research output: Contribution to journalArticle

TY - JOUR

T1 - Proton-neutron structure of the N=52 nucleus Zr-92

AU - Werner, V

AU - Belic, D

AU - von Brentano, P

AU - Fransen, C

AU - Gade, A

AU - von Garrel, H

AU - Jolie, J

AU - Kneissl, U

AU - Kohstall, C

AU - Linnemann, A

AU - Lisetskiy, AF

AU - Pietralla, N

AU - Pitz, HH

AU - Scheck, M

AU - Speidel, KH

AU - Stedile, F

AU - Yates, SW

PY - 2002/12/19

Y1 - 2002/12/19

N2 - Following the successful identification of mixed-symmetric one- and two-phonon states in the N=52 nuclei 94Mo and 96Ru, we have performed a photon scattering experiment on the N=52 isotone 92Zr. Experimental data and shell model calculations show that both, single particle and collective degrees of freedom are present in the low-lying levels of 92Zr. The second excited quadrupole state shows the signatures of the one-phonon mixed-symmetric 2+ state, while calculations and data indicate an almost pure neutron configuration for the 2+1 state, in contradiction with the F-spin symmetric limit. Furthermore, two strong dipole excitations, which are candidates for the two-phonon quadrupole–octupole coupled E1 excitation and for the mixed-symmetric 1+ two-phonon state, were observed.

AB - Following the successful identification of mixed-symmetric one- and two-phonon states in the N=52 nuclei 94Mo and 96Ru, we have performed a photon scattering experiment on the N=52 isotone 92Zr. Experimental data and shell model calculations show that both, single particle and collective degrees of freedom are present in the low-lying levels of 92Zr. The second excited quadrupole state shows the signatures of the one-phonon mixed-symmetric 2+ state, while calculations and data indicate an almost pure neutron configuration for the 2+1 state, in contradiction with the F-spin symmetric limit. Furthermore, two strong dipole excitations, which are candidates for the two-phonon quadrupole–octupole coupled E1 excitation and for the mixed-symmetric 1+ two-phonon state, were observed.

KW - Zr-92

KW - NRF

KW - (gamma, gamma ')

KW - shell model

KW - mixed symmetry

KW - IBM

KW - A=92

U2 - 10.1016/S0370-2693(02)02961-1

DO - 10.1016/S0370-2693(02)02961-1

M3 - Article

VL - 550

SP - 140

EP - 146

JO - Physics Letters B

JF - Physics Letters B

SN - 0370-2693

IS - 3-4

ER -

Werner V, Belic D, von Brentano P, Fransen C, Gade A, von Garrel H et al. Proton-neutron structure of the N=52 nucleus Zr-92. Physics Letters B. 2002 Dec 19;550(3-4):140-146. https://doi.org/10.1016/S0370-2693(02)02961-1