A gas-jet coupled ISOL system at VECC

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Abstract

A gas-jet recoil transport (GJRT) system at VECC is being extensively used for the study of short-lived nuclei. A transport efficiency of ∼70–90% has been obtained for a large number of elements at a distance of ∼40 ft using a 1.27 mm tygon capillary. For the same distance, a transit time of ∼900 ms has been obtained using a pressure differential of 1 atmosphere.

To extend the capability of the present system, a mass separator coupled to the GJRT has been designed. The integrated system will consist of a GJRT system, a skimmer, an ion-source, a beam transport system and a tape-transport type detection assembly. The beam optics of a 90° analyser magnet have been computed using the code ODESSA developed at VECC. A mass resolving power of ∼600 and a dispersion of ∼2.36 m have been estimated including second order aberrations. With reduced capillary length, the facility should allow the study of nuclides with half-lives ∼100 ms.

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Cited by (0)

Present address: Nuclear Science Centre, New Delhi-110 067, India.

∗∗

Member of Chemistry Division, BARC, Bombay, India.

+

Member of Radiochemistry Division, BARC, Bombay, India.

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