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

doi:10.1016/S0370-2693(02)02961-1

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

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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.

Original language	English
Pages (from-to)	140-146
Journal	Physics Letters B
Volume	550
Issue number	3-4
DOIs	https://doi.org/10.1016/S0370-2693(02)02961-1
Publication status	Published - 19 Dec 2002
Externally published	Yes

Keywords

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

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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, 550(3-4), 140-146. https://doi.org/10.1016/S0370-2693(02)02961-1

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

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",

year = "2002",

month = dec,

day = "19",

doi = "10.1016/S0370-2693(02)02961-1",

language = "English",

volume = "550",

pages = "140--146",

journal = "Physics Letters B",

issn = "0370-2693",

publisher = "Elsevier B.V.",

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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

SN - 0370-2693

VL - 550

SP - 140

EP - 146

JO - Physics Letters B

JF - Physics Letters B

IS - 3-4

ER -

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

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Keywords

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