Band Crossings in 83Y Revisited

F. Cristancho; C. J. Gross; K. P. Lieb; Dirk Rudolph; O. Skeppstedt; M. A. Bentley; W. Gelletly; H. G. Price; J. Simpson; J. L. Durell; B. J. Varley; S. Rastikerdar

doi:10.1016/0375-9474(92)90206-Y

Band Crossings in 83Y Revisited

F. Cristancho, C. J. Gross, K. P. Lieb, Dirk Rudolph, O. Skeppstedt, M. A. Bentley, W. Gelletly, H. G. Price, J. Simpson, J. L. Durell, B. J. Varley, S. Rastikerdar

External Organization - Unknown

Research output: Contribution to journal › Article › peer-review

Abstract

Gamma rays from the reaction Si-28(Ni-58, 3p)83Y at a beam energy of 195 MeV were recorded in recoil-gamma- and gamma-gamma-coincidence mode with the POLYTESSA array and the Daresbury recoil mass separator. The known rotational bands were extended up to probable spins 49/2+ and 45/2-; many new interconnecting dipole transitions and an additional cascade were established. The bands are interpreted in terms of the cranked shell model; they exhibit two band crossings each, associated with g9/2 neutron and proton alignment. In the negative-parity yrast bands a strong signature inversion with DELTA-e' = -100 keV and a crossing pattern alternating in the favoured and unfavoured band develop. Hartree-Fock-Bogolyubov cranking calculations with a Woods-Saxon single-particle potential have been performed to illustrate the various shape changes and explain this signature inversion.

Original language	English
Pages (from-to)	307-327
Journal	Nuclear Physics, Section A
Volume	540
Issue number	1-2
DOIs	https://doi.org/10.1016/0375-9474(92)90206-Y
Publication status	Published - 1992

Bibliographical note

1-2

Subject classification (UKÄ)

Subatomic Physics

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10.1016/0375-9474(92)90206-Y

http://www.sciencedirect.com/science/article/pii/037594749290206Y

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@article{8cfc7ee1cf0b4280bbbcda9b8fff8988,

title = "Band Crossings in 83Y Revisited",

abstract = "Gamma rays from the reaction Si-28(Ni-58, 3p)83Y at a beam energy of 195 MeV were recorded in recoil-gamma- and gamma-gamma-coincidence mode with the POLYTESSA array and the Daresbury recoil mass separator. The known rotational bands were extended up to probable spins 49/2+ and 45/2-; many new interconnecting dipole transitions and an additional cascade were established. The bands are interpreted in terms of the cranked shell model; they exhibit two band crossings each, associated with g9/2 neutron and proton alignment. In the negative-parity yrast bands a strong signature inversion with DELTA-e' = -100 keV and a crossing pattern alternating in the favoured and unfavoured band develop. Hartree-Fock-Bogolyubov cranking calculations with a Woods-Saxon single-particle potential have been performed to illustrate the various shape changes and explain this signature inversion.",

author = "F. Cristancho and Gross, {C. J.} and Lieb, {K. P.} and Dirk Rudolph and O. Skeppstedt and Bentley, {M. A.} and W. Gelletly and Price, {H. G.} and J. Simpson and Durell, {J. L.} and Varley, {B. J.} and S. Rastikerdar",

note = "1-2",

year = "1992",

doi = "10.1016/0375-9474(92)90206-Y",

language = "English",

volume = "540",

pages = "307--327",

journal = "Nuclear Physics, Section A",

issn = "0375-9474",

publisher = "Elsevier",

number = "1-2",

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TY - JOUR

T1 - Band Crossings in 83Y Revisited

AU - Cristancho, F.

AU - Gross, C. J.

AU - Lieb, K. P.

AU - Rudolph, Dirk

AU - Skeppstedt, O.

AU - Bentley, M. A.

AU - Gelletly, W.

AU - Price, H. G.

AU - Simpson, J.

AU - Durell, J. L.

AU - Varley, B. J.

AU - Rastikerdar, S.

N1 - 1-2

PY - 1992

Y1 - 1992

N2 - Gamma rays from the reaction Si-28(Ni-58, 3p)83Y at a beam energy of 195 MeV were recorded in recoil-gamma- and gamma-gamma-coincidence mode with the POLYTESSA array and the Daresbury recoil mass separator. The known rotational bands were extended up to probable spins 49/2+ and 45/2-; many new interconnecting dipole transitions and an additional cascade were established. The bands are interpreted in terms of the cranked shell model; they exhibit two band crossings each, associated with g9/2 neutron and proton alignment. In the negative-parity yrast bands a strong signature inversion with DELTA-e' = -100 keV and a crossing pattern alternating in the favoured and unfavoured band develop. Hartree-Fock-Bogolyubov cranking calculations with a Woods-Saxon single-particle potential have been performed to illustrate the various shape changes and explain this signature inversion.

AB - Gamma rays from the reaction Si-28(Ni-58, 3p)83Y at a beam energy of 195 MeV were recorded in recoil-gamma- and gamma-gamma-coincidence mode with the POLYTESSA array and the Daresbury recoil mass separator. The known rotational bands were extended up to probable spins 49/2+ and 45/2-; many new interconnecting dipole transitions and an additional cascade were established. The bands are interpreted in terms of the cranked shell model; they exhibit two band crossings each, associated with g9/2 neutron and proton alignment. In the negative-parity yrast bands a strong signature inversion with DELTA-e' = -100 keV and a crossing pattern alternating in the favoured and unfavoured band develop. Hartree-Fock-Bogolyubov cranking calculations with a Woods-Saxon single-particle potential have been performed to illustrate the various shape changes and explain this signature inversion.

U2 - 10.1016/0375-9474(92)90206-Y

DO - 10.1016/0375-9474(92)90206-Y

M3 - Article

SN - 0375-9474

VL - 540

SP - 307

EP - 327

JO - Nuclear Physics, Section A

JF - Nuclear Physics, Section A

IS - 1-2

ER -

Band Crossings in 83Y Revisited

Abstract

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