Fabrication and testing of the recoil mass spectrometer at Bombay Pelletron

S NAGARAJ, H C JAIN, P K JOSHI, S D PAUL, R PALIT, H V PANCHAL, B S NAIDU, A CHATTERJEE* and A NAVIN*

Tata Institute of Fundamental Research, Mumbai 400 005, India

* Bhabha Atomic Research Centre, Mumbai 400 085, India

Abstract.

A recoil mass spectrometer (RMS) has been designed, fabricated and installed at the 15oS beam-line of the Pelletron at TIFR. The RMS consists of a quadrupole doublet just after the target chamber followed by an `electrostatic deflector', a magnetic dipole and a second electrostatic deflector. The recoils produced in the 12C + 58Ni reaction using 60 MeV  12C beam were focussed with the help of electric and magnetic fields and detected in a strip detector placed at the focal plane of the RMS. Further testing of the spectrometer to obtain mass resolution and efficiency are in progress. 

Keywords:  Charged particle spectrometers: electric and magnetic; fusion reaction; evaporation residues.

Pacs Nos.  29.30.Aj

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