Publication


Featured researches published by G. D. Johns.


Physics Letters B | 1996

First observation of a strongly-coupled band in even-even A ≈ 80 nuclei: 76Kr

J. Döring; G. D. Johns; R. A. Kaye; M. A. Riley; S. L. Tabor; J.X. Saladin

Abstract A new ΔI = 1 band has been discovered in 76Kr, the first to be observed in an even-even A ≈ 80 nucleus. The rotational band is built upon a Kπ = 4(+) state at 2844 keV excitation energy which is interpreted as a strongly-coupled two-quasineutron configuration ( [301] 3 2 − ⊗ [303] 5 2 − )4+ at a prolate deformation of π2 ≈ 0.34.


European Physical Journal A | 1996

Nuclear structure of neutron-rich 78 As

J. Döring; G. D. Johns; David J. Hartley; R. A. Kaye; K. W. Kemper; G. N. Sylvan; S. L. Tabor

Excited states in the neutron-rich doubly-odd nucleus78As have been identified for the first time by proton-γ and γ-γ coincidence measurements via the76Ge(α, pn) reaction at 32, 36, and 40 MeV beam energy. Four levels have been found to decay with lifetimes in the nanosecond region. The 5(+) to (10+) states are ascribed to the (πg9/2⊗νg9/2) intruder two-quasiparticle configuration with some collective components in the 9(+) and (10+) states.


Physical Review C | 1994

Weak coupling in [sup 143]Nd

Tekyi-Mensah Oj; P. D. Cottle; J. Doering; Green Pv; Holcomb Jw; G. D. Johns; Johnson Jl; Johnson Td; K. W. Kemper; Phillip L. Kerr; S. L. Tabor; Womble Pc; Wood Va

High-spin states of [sup 143]Nd have been studied using the [sup 130]Te([sup 18]O,5[ital n]) reaction at 85 MeV. The yrast states observed up to a tentatively assigned spin of 45/2 can be described in a remarkably simple way by the weak coupling of an [ital f][sub 7/2] neutron to the [sup 142]Nd core nucleus. Our results demonstrate that [sup 143]Nd is one of the best known examples of weak coupling at high angular momentum.


European Physical Journal A | 1994

Possibleπ(h 11 2/3 g 7 2/−1 ) states in144Nd

J. K. Jewell; O. J. Tekyi-Mensah; P. D. Cottle; J. Döring; P. V. Green; J. W. Holcomb; G. D. Johns; J. L. Johnson; Johnson Td; K. W. Kemper; P. L. Kerr; S. L. Tabor; Womble Pc; Wood Va

High spin states of the nucleus144Nd have been studied using the techniques of gamma-ray spectroscopy and the130Te(18O,4n) reaction at 85 MeV. It is suggested that a sequence of states having J=17–24 arises from the coupling of the h12/3g72−1 proton configuration to the f72/2 and f7/2h9/2 neutron configurations.


Physical Review C | 1996

Transition strengths and new band structures in odd-odd {sup 78}Rb

R. A. Kaye; J. Döring; Holcomb Jw; G. D. Johns; Johnson Td; M. A. Riley; G. N. Sylvan; Womble Pc; Wood Va; S. L. Tabor; J. X. Saladin


Physical Review C | 2000

Band terminations in the valence space of {sup 86}Zr

J. Döring; Y.A. Akovali; C. Baktash; F.E. Durham; C. J. Gross; Pf Hua; G. D. Johns; M. Korolija; D. R. Lafosse; I. Y. Lee; A. O. Macchiavelli; W. Rathbun; G. Sarantites; D. W. Stracener; G.S. Solomon; L. Tabor; A. M. Vander Molen; A.V. Afanasjev; I. Ragnarsson


Physical Review C | 1996

Shell-model Influence in the Rotational Nucleus 86Mo

Dirk Rudolph; C. J. Gross; Y. A. Akovali; C. Baktash; J. Doring; F. E. Durham; P. F. Hua; G. D. Johns; M. Korolija; D. R. Lafosse; I. Y. Lee; A. O. Macchiavelli; W. Rathbun; D. G. Sarantites; D. W. Stracener; S. L. Tabor; A. V. Afanasjev; I. Ragnarsson


Physical Review C | 1995

High-spin bands in 80Kr.

J. Döring; Wood Va; J. W. Holcomb; G. D. Johns; Johnson Td; M. A. Riley; G. N. Sylvan; Womble Pc; S. L. Tabor


Physical Review C | 1993

Nuclear structure of odd-odd [sup 82]Y

Womble Pc; J. Döring; T. Glasmacher; Holcomb Jw; G. D. Johns; Johnson Td; T. Petters; M. A. Riley; Wood Va; S. L. Tabor; Paul B. Semmes


Physical Review C | 1998

Rotational bands in 170 Yb and 171 Yb and the projected shell model

D. E. Archer; M. A. Riley; T. B. Brown; David J. Hartley; J. Döring; G. D. Johns; J. Pfohl; S. L. Tabor; J. Simpson; Yang Kook Sun; J. L. Egido

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