Akademik Veri Yönetim Sistemi
International Dumlupınar Science and Mathematics Congress 2022, 5 - 07 Eylül 2022, ss.1
Nuclei in the rare earth region such as 165Er are deformed with a prolate deformation of δ ~ 0.3 [1].
Their structure reveals well-developed rotational bands. They can be studied in charge exchange
reactions, such as (p,n) or (3He,t) reactions, that mirror beta decay. In general in deformed nuclei we
expect the selection rules ΔK =0,+/-1 to apply to Gamow-Teller transitions caused by the στ
operator. It is also a matter of particular interest whether the asymptotic quantum numbers [N nz Λ]
in the Nilsson model are also applicable in addition to the Kπ selection rules. Here we report
measurements of the transitions in the 165Ho(3He,t)165Er reaction studied at the Research Centre for
Nuclear Physics (RCNP) at Osaka University, Japan. A 3He beam of 140 MeV/nucleon was used
with a target foil of natural Ho, thickness 5.8 mgcm-2, at the GRAND RAIDEN high resolution
magnetic spectrometer placed at 0◦ [2,3]. The Isobaric Analogue State of the 7/2-[5 2 3] ground
state of 165Ho was observed to be at 15.3 MeV in 165Er. At the same time this study of the
165Ho(3He,t)165Er reaction should shed light on the distribution of GT strength in 165Er, a
representative of deformed nuclei.