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SUMMARY:Gamow-Teller Resonances in the beta decay and Charge-Exchange Reac
 tions
DTSTART;VALUE=DATE-TIME:20110221T144000Z
DTEND;VALUE=DATE-TIME:20110221T152000Z
DTSTAMP;VALUE=DATE-TIME:20260511T181710Z
UID:indico-contribution-6164@indico.ific.uv.es
DESCRIPTION:Speakers: Yoshitaka Fujita (Department of Physics\, Osaka Univ
 ersity)\nGamow-Teller (GT) transitions are caused by the most common weak 
 interaction of spin-isospin (στ) type with ΔL = 0.  Since spin and isos
 pin are unique quantum numbers in nuclei\, GT transitions represent very i
 mportant nuclear response. GT transitions are studied by the β decay and 
 charge-exchange (CE) reactions. The β decay has a direct access to the ab
 solute GT transition strengths B(GT) from a study of half-lives\, Q-values
  and branching ratios\, but it can only access states at excitation energi
 es lower than the decay Q-value. In contrast\, the CE reactions\, e.g. (3H
 e\,t) reaction\, at intermediate beam energies and 0º\, can selectively e
 xcite GT states up to high excitation energies in the final nucleus. \n   
 Although the study of GT strength in the β decay is restricted by the dec
 ay Q-value\, unstable nuclei can have the Q-value of 12 MeV or larger\, wh
 ich\, in principle allows the study of the central part of the GTR where t
 he GT strength is concentrated. Possibility of observing GTR structures in
  β-decay studies will be discussed on the basis of the GTR studies by (3H
 e\,t) reactions assuming a good isospin symmetry of nuclear structure and 
 transitions.\n\nhttps://indico.ific.uv.es/event/349/contributions/6164/
LOCATION:Colegio Rector Peset
URL:https://indico.ific.uv.es/event/349/contributions/6164/
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