Beta decay of Ar-31

• A complete study of Ar-31 beta decay has been made by high-resolution charged-particle and gamma-ray spectroscopy. Beta-delayed radiation was detected by an array of three charged-particle detectors and a large-volume germanium detector. Fifteen new energy levels were discovered in Cl-31. The beta-strength distribution, measured to 14.5 MeV, is compared with a shell-model calculation in the full sd space. The quenching of the Gamow-Teller strength and the isospin impurity of the IAS in Cl-31 are discussed. (C) 1998 Published by Elsevier Science B.V.

Subject headings

NATURVETENSKAP  -- Fysik -- Subatomär fysik (hsv//swe)

NATURAL SCIENCES  -- Physical Sciences -- Subatomic Physics (hsv//eng)

Keyword

EMISSION

SD-SHELL NUCLEI

E-p

DELAYED-PROTON DECAY

Gamow-Teller strength

STRENGTH

calculations

isospin mixing

deduced

E-x(Cl-31)

NE-17

Gamow-Teller quenching

selective mass

I-p

OXBASH shell-model

beta gamma

log ft

beta 2p

radioactivity Ar-31 (from 1 GeV p on CaO powder target

measured beta p

separation)

Publication and Content Type

art (subject category)

ref (subject category)