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Picosecond half-lives; nuclear excited states; plunger set-up; flat and uniform target and stopper foils; capacitance measurement

A plunger set-up has been designed and constructed to measure picosecond nuclear half-lives using recoil distance method (RDM). The system has been used to measure the half-lives of nuclear states in³⁵Cl,^37,38Ar and⁴⁰K. The shortest half-life measured with the system isT_1/2=0.36(14) ps for the 4366 keV (8⁺) state and the longest half-life isT_1/2=1.10(7) ns for the 2543 keV (7⁺) state in⁴⁰K.

H C Jain¹ S Chattopadhyay¹ Y K Agarwal¹ M L Jhingan¹ S K Mitra¹ H V Panchal¹ A Roy^{1 2}

1. Tata Institute of Fundamental Research, Bombay - 400 005, India
2. Nuclear Science Center, JNU Campus, New Delhi - 110 067, India

Published

September 1991

Manuscript received

11 April 1991

Manuscript revised

17 June 1991