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Title: Yrast excitations around {sup 132}Sn: The two and three valence- proton N = 82 isotones {sup 134}Te and {sup 135}I

Abstract

Large multidetector {gamma}-ray arrays, which can separate the prompt {gamma}-ray cascades within a single fission product nucleus (of moderate yield) from the bulk of prompt {gamma}-rays, has now opened new prospects for studies of yrast excitations in {sup 132}Sn and the few valence particle nuclei around it. Measurements were performed at Eurogam II using a {sup 248}Cm source. This paper features the results for the two and three valence proton N=82 isotones {sup 134}Te and {sup 135}I which exhibit simple clearcut excitation modes, resembling {sup 210}Po and {sup 211}At, their well studied N=126 counterparts in the {sup 208}Pb region. A search was made for new {sup 135}I transitions by setting a single coincidence gate on 1134 keV {gamma}-rays; strong 288, 572, 690, 725, 1661, 1695, and 2247 keV coincident {gamma}-rays were identified as {sup 135}I {gamma}-rays. In summary, yrast excitations to above 5.5 MeV excitation energy in the 2- and 3-proton nuclei {sup 134}Te and {sup 135}I have been established and interpreted with help of shell model calculations using empirical nucleon-nucleon interactions. This opens possibilities for exploring simple excitation modes in the {sup 132}Sn region under conditions comparable with but not identical to those in the well-studied {sup 208}Pb region.

Authors:
; ;  [1]
  1. Purdue Univ., Lafayette, IN (United States); and others
Publication Date:
Research Org.:
Argonne National Lab., IL (United States). Physics Div.; Purdue Univ., Lafayette, IN (United States)
Sponsoring Org.:
USDOE Office of Energy Research, Washington, DC (United States); Science and Engineering Research Council, Swindon (United Kingdom); Polish State Committee for Scientific Research (Poland)
OSTI Identifier:
417603
Report Number(s):
ANL/PHY/CP-91408; CONF-9607156-2
ON: DE97000357; CNN: Grant GRH 71161;Grant 1044-PO3-96-10; TRN: 97:007220
DOE Contract Number:  
FG02-87ER40346; W-31109-ENG-38
Resource Type:
Conference
Resource Relation:
Conference: Conference on nuclear structure at the limits, Argonne, IL (United States), 22-26 Jul 1996; Other Information: PBD: [1996]
Country of Publication:
United States
Language:
English
Subject:
66 PHYSICS; TELLURIUM 134; IODINE 135; ISOTONIC NUCLEI; TIN 132; YRAST STATES

Citation Formats

Daly, P J, Zhang, C T, and Bhattacharyya, P. Yrast excitations around {sup 132}Sn: The two and three valence- proton N = 82 isotones {sup 134}Te and {sup 135}I. United States: N. p., 1996. Web.
Daly, P J, Zhang, C T, & Bhattacharyya, P. Yrast excitations around {sup 132}Sn: The two and three valence- proton N = 82 isotones {sup 134}Te and {sup 135}I. United States.
Daly, P J, Zhang, C T, and Bhattacharyya, P. Fri . "Yrast excitations around {sup 132}Sn: The two and three valence- proton N = 82 isotones {sup 134}Te and {sup 135}I". United States. https://www.osti.gov/servlets/purl/417603.
@article{osti_417603,
title = {Yrast excitations around {sup 132}Sn: The two and three valence- proton N = 82 isotones {sup 134}Te and {sup 135}I},
author = {Daly, P J and Zhang, C T and Bhattacharyya, P},
abstractNote = {Large multidetector {gamma}-ray arrays, which can separate the prompt {gamma}-ray cascades within a single fission product nucleus (of moderate yield) from the bulk of prompt {gamma}-rays, has now opened new prospects for studies of yrast excitations in {sup 132}Sn and the few valence particle nuclei around it. Measurements were performed at Eurogam II using a {sup 248}Cm source. This paper features the results for the two and three valence proton N=82 isotones {sup 134}Te and {sup 135}I which exhibit simple clearcut excitation modes, resembling {sup 210}Po and {sup 211}At, their well studied N=126 counterparts in the {sup 208}Pb region. A search was made for new {sup 135}I transitions by setting a single coincidence gate on 1134 keV {gamma}-rays; strong 288, 572, 690, 725, 1661, 1695, and 2247 keV coincident {gamma}-rays were identified as {sup 135}I {gamma}-rays. In summary, yrast excitations to above 5.5 MeV excitation energy in the 2- and 3-proton nuclei {sup 134}Te and {sup 135}I have been established and interpreted with help of shell model calculations using empirical nucleon-nucleon interactions. This opens possibilities for exploring simple excitation modes in the {sup 132}Sn region under conditions comparable with but not identical to those in the well-studied {sup 208}Pb region.},
doi = {},
url = {https://www.osti.gov/biblio/417603}, journal = {},
number = ,
volume = ,
place = {United States},
year = {1996},
month = {11}
}

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