Band structure and hole-core coupling in 111In

doi:10.1016/0375-9474(78)90208-7

Nuclear Physics A

Volume 299, Issue 1, 17 April 1978, Pages 60-76

https://doi.org/10.1016/0375-9474(78)90208-7 Get rights and content

Abstract

The level structure of ¹¹¹ In was studied using the ¹⁰⁹Ag(α, 2nγ)¹¹¹ In reaction. The experiments included γ-ray excitation function, γ-γ coincidence, γ-ray angular distribution and conversion electron measurements. The structure of the cascade of positive-parity states with spins in the range from $92^{+}$ to $172^{+}$ is well described by coupling a $g_{92}$ proton-hole to the quadrupole vibrations of th¹¹²Sn core. Branching and mixing ratios of γ-rays decaying within this band are reproduced satisfactorily by hole-phonon coupling calculations. A calculation of the leading order contributions in the transitional matrix elements shows that in particle-phonon coupling the sign of the mixing ratios is related to the sign of the quadrupole moment of the band head. This is in agreement with the experimental results. The half-life of the isomeric state at $2717 keV (J^{π} = 212^{+}, T_{12} = 13.8 ns)$ is related to the half-life of the 6⁺ isomer in the adjacent ¹¹²Sn nucleus. Also the negative-parity states can be interpreted within the hole-core coupling model. No evidence was found for bands based on deformed proton states.

References (35)

M. Conjeaud et al.
Nucl. Phys.
(1969)
F.S. Dietrich et al.
Nucl. Phys.
(1970)
W.H.A. Hesselink et al.
Nucl. Phys.
(1974)
J.W. Smits et al.
Nucl. Phys.
(1976)
A. Bäcklin et al.
Nucl. Phys.
(1967)
J. McDonald et al.
Nucl. Phys.
(1967)
V.R. Pandharipande et al.
Nucl. Phys.
(1968)
V. Sergeev et al.
Nucl. Phys.
(1973)
J. McDonald et al.
Nucl. Phys.
(1974)
S. Harar et al.
Nucl. Phys.
(1972)

W. Dietrich et al.

Nucl. Phys.

(1975)

K. Heyde et al.

Phys. Lett.

(1976)

H.P. Blok et al.

Nucl. Instr.

(1975)

J. van Klinken et al.

Nucl. Instr.

(1972)

J. van Klinken et al.

Nucl. Instr.

(1973)

V. Paar

Nucl. Phys.

(1973)

W.F. van Gunsteren et al.

Z. Phys.

(1974)

V. Paar

Phys. Lett.

(1976)

Cited by (32)

Nuclear Data Sheets for A = 111
2009, Nuclear Data Sheets
Nuclear data sheets for A = 111
2003, Nuclear Data Sheets
Nuclear Data Sheets for A = 107 *
2000, Nuclear Data Sheets
Nuclear data sheets for A = 111
1996, Nuclear Data Sheets
Abstract:This evaluation for A=111 updates one by J. Blachot, (90Bl12), published inNuclear Data Sheets 60, 889(1990).Cutoff Date:All data available before October 1995 have been considered.General Policies and Organization of Material:See the January issue of Nuclear Data Sheets.General Comments:Throughout this evaluation, rotational band parameters have been calculated from the standard energy equation:[formula]The constant A reported in keV and the constant B, in eV. When “A” alone is given, “B” is assumed to be 0.Acknowledgments:Many useful comments and criticisms by the editors are greatly appreciated.
Gamma-ray spectroscopy of <sup>110</sup>Cd
1994, Nuclear Physics, Section A
The nucleus ¹¹⁰Cd has been studied using the ¹³C and ¹⁸O induced reactions and the NORDBALL multi-detector array. The yrast band was observed to I^π = 28⁺ and a large number of side bands were identified. The $h_{112}$ neutrons were found to play a dominant role in the observed rotational structures. The weakly populated yrast 3187 keV 8⁺ state is interpreted as arising from the proton $g_{92}^{−2}$ configuration. Collective bands, where the band members are connected by ΔI = 1 transitions and where the ΔI = 2 transitions are not observed, are also reported. These bands are interpreted to have prolate configurations involving both the $h_{112}$ neutrons and the $g_{92}$ protons. The experimental data are discussed in terms of the total routhian surface and cranked shell model calculations.
First observation of a proton intruder band below the Z = 50 major shell gap. Spectroscopy of <sup>111</sup>In
1993, Physics Letters B

View all citing articles on Scopus

^†: Permanent address: Prirodoslovno-Matematički Fakultet, University of Zagreb and Institut Ruder Bošković, Zagreb, Yugoslavia.

View full text