E0 transitions in the light tellurium isotopes: evidence for intruder states
P M Walker; C J Ashworth; I S Grant; V R Green; J Rikovska; T L Shaw; N J Stone; P M Walker; SERC Daresbury Lab., Warrington, UK; C J Ashworth; SERC Daresbury Lab., Warrington, UK; I S Grant; SERC Daresbury Lab., Warrington, UK; V R Green; SERC Daresbury Lab., Warrington, UK; J Rikovska; SERC Daresbury Lab., Warrington, UK; T L Shaw; SERC Daresbury Lab., Warrington, UK; N J Stone; SERC Daresbury Lab., Warrington, UK
Журнал:
Journal of Physics G: Nuclear Physics
Дата:
1987-09-01
Аннотация:
Conversion electron spectra have been measured for <sup>118,120,122</sup>Te, following the beta decay of on-line mass-separated iodine isotopes. Several new I<sup>pi </sup>=0<sup>+</sup> states have been identified at low excitation energy. These, together with their E0 de-excitation strengths, provide evidence for the presence of intruder configurations, albeit mixed with the normal configurations. The experimental data are compared with IBM-2 mixing calculations.
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