Further evidence on shape coexistence in 72As

D. Sohler, Zs Podolyák, Zs. S. Dombrádi, J. Gulyás, A. Algora, S. Brant, V. Krstić, V. Paar

Research output: Contribution to journalArticle

6 Citations (Scopus)

Abstract

The 72As nucleus was studied via the (α,nγ) reaction at 14.2 MeV bombarding energy. Single γ-, γγ-coincidence, and internal conversion electron spectra were measured with Ge(HP) γ-ray and superconducting magnetic lens plus Si(Li) electron spectrometers. On the basis of the internal conversion coefficients of 72As transitions, parities of the medium-spin levels up to 1.4 MeV excitation energy were determined, resulting in unambiguous parities also for the heads of the bands observed previously. The states observed were assigned to proton-neutron multiplets on the basis of their decay properties. The energy splittings of the observed multiplets are in accordance with the prediction of the previous interacting boson-fermion-fermion model (IBFFM) calculations using a transitional core lying between the vibrational SU(5) and γ-soft O(6) limits, except that of the πg9/2νg9/2 multiplet, which was described using the deformed SU(3) core in the present IBFFM calculations. Such a core structure is in accordance with previous particle-rotor and Hartree-Fock-Bogoliubov calculations.

Original languageEnglish
Pages (from-to)1328-1333
Number of pages6
JournalPhysical Review C - Nuclear Physics
Volume59
Issue number3
Publication statusPublished - Mar 1999

Fingerprint

fermions
fine structure
internal conversion
parity
bosons
magnetic lenses
rotors
energy
rays
electrons
spectrometers
neutrons
nuclei
protons
decay
coefficients
predictions
excitation

ASJC Scopus subject areas

  • Physics and Astronomy(all)
  • Nuclear and High Energy Physics

Cite this

Further evidence on shape coexistence in 72As. / Sohler, D.; Podolyák, Zs; Dombrádi, Zs. S.; Gulyás, J.; Algora, A.; Brant, S.; Krstić, V.; Paar, V.

In: Physical Review C - Nuclear Physics, Vol. 59, No. 3, 03.1999, p. 1328-1333.

Research output: Contribution to journalArticle

Sohler, D, Podolyák, Z, Dombrádi, ZS, Gulyás, J, Algora, A, Brant, S, Krstić, V & Paar, V 1999, 'Further evidence on shape coexistence in 72As', Physical Review C - Nuclear Physics, vol. 59, no. 3, pp. 1328-1333.
Sohler, D. ; Podolyák, Zs ; Dombrádi, Zs. S. ; Gulyás, J. ; Algora, A. ; Brant, S. ; Krstić, V. ; Paar, V. / Further evidence on shape coexistence in 72As. In: Physical Review C - Nuclear Physics. 1999 ; Vol. 59, No. 3. pp. 1328-1333.
@article{8b1f8f44d58d40c4b8b00234155bc4a5,
title = "Further evidence on shape coexistence in 72As",
abstract = "The 72As nucleus was studied via the (α,nγ) reaction at 14.2 MeV bombarding energy. Single γ-, γγ-coincidence, and internal conversion electron spectra were measured with Ge(HP) γ-ray and superconducting magnetic lens plus Si(Li) electron spectrometers. On the basis of the internal conversion coefficients of 72As transitions, parities of the medium-spin levels up to 1.4 MeV excitation energy were determined, resulting in unambiguous parities also for the heads of the bands observed previously. The states observed were assigned to proton-neutron multiplets on the basis of their decay properties. The energy splittings of the observed multiplets are in accordance with the prediction of the previous interacting boson-fermion-fermion model (IBFFM) calculations using a transitional core lying between the vibrational SU(5) and γ-soft O(6) limits, except that of the πg9/2νg9/2 multiplet, which was described using the deformed SU(3) core in the present IBFFM calculations. Such a core structure is in accordance with previous particle-rotor and Hartree-Fock-Bogoliubov calculations.",
author = "D. Sohler and Zs Podoly{\'a}k and Dombr{\'a}di, {Zs. S.} and J. Guly{\'a}s and A. Algora and S. Brant and V. Krstić and V. Paar",
year = "1999",
month = "3",
language = "English",
volume = "59",
pages = "1328--1333",
journal = "Physical Review C - Nuclear Physics",
issn = "0556-2813",
publisher = "American Physical Society",
number = "3",

}

TY - JOUR

T1 - Further evidence on shape coexistence in 72As

AU - Sohler, D.

AU - Podolyák, Zs

AU - Dombrádi, Zs. S.

AU - Gulyás, J.

AU - Algora, A.

AU - Brant, S.

AU - Krstić, V.

AU - Paar, V.

PY - 1999/3

Y1 - 1999/3

N2 - The 72As nucleus was studied via the (α,nγ) reaction at 14.2 MeV bombarding energy. Single γ-, γγ-coincidence, and internal conversion electron spectra were measured with Ge(HP) γ-ray and superconducting magnetic lens plus Si(Li) electron spectrometers. On the basis of the internal conversion coefficients of 72As transitions, parities of the medium-spin levels up to 1.4 MeV excitation energy were determined, resulting in unambiguous parities also for the heads of the bands observed previously. The states observed were assigned to proton-neutron multiplets on the basis of their decay properties. The energy splittings of the observed multiplets are in accordance with the prediction of the previous interacting boson-fermion-fermion model (IBFFM) calculations using a transitional core lying between the vibrational SU(5) and γ-soft O(6) limits, except that of the πg9/2νg9/2 multiplet, which was described using the deformed SU(3) core in the present IBFFM calculations. Such a core structure is in accordance with previous particle-rotor and Hartree-Fock-Bogoliubov calculations.

AB - The 72As nucleus was studied via the (α,nγ) reaction at 14.2 MeV bombarding energy. Single γ-, γγ-coincidence, and internal conversion electron spectra were measured with Ge(HP) γ-ray and superconducting magnetic lens plus Si(Li) electron spectrometers. On the basis of the internal conversion coefficients of 72As transitions, parities of the medium-spin levels up to 1.4 MeV excitation energy were determined, resulting in unambiguous parities also for the heads of the bands observed previously. The states observed were assigned to proton-neutron multiplets on the basis of their decay properties. The energy splittings of the observed multiplets are in accordance with the prediction of the previous interacting boson-fermion-fermion model (IBFFM) calculations using a transitional core lying between the vibrational SU(5) and γ-soft O(6) limits, except that of the πg9/2νg9/2 multiplet, which was described using the deformed SU(3) core in the present IBFFM calculations. Such a core structure is in accordance with previous particle-rotor and Hartree-Fock-Bogoliubov calculations.

UR - http://www.scopus.com/inward/record.url?scp=0033243991&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=0033243991&partnerID=8YFLogxK

M3 - Article

VL - 59

SP - 1328

EP - 1333

JO - Physical Review C - Nuclear Physics

JF - Physical Review C - Nuclear Physics

SN - 0556-2813

IS - 3

ER -