A multi NaI(Tl) detector array for medium energy γ-ray spectroscopy

Agarwal, Y. K. ; Baba, C. V. K. ; Chakrabarty, D. R. ; Datar, V. M. ; Gothe, D. A. ; Jain, H. C. ; Roy, A. ; Sharan, M. K. (1990) A multi NaI(Tl) detector array for medium energy γ-ray spectroscopy Pramana - Journal of Physics, 35 (1). pp. 49-65. ISSN 0304-4289

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Official URL: http://www.ias.ac.in/j_archive/pramana/35/1/49-65/...

Related URL: http://dx.doi.org/10.1007/BF02846641


An array of seven hexagonal NaI(Tl) detectors has been set up for measuring γ-ray spectra in the energy region 5 MeV≤Eγ≤40 MeV with good accuracy. This is in contrast to earlier set ups which mostly used one large sized (about 10 inches ψ×15 inches long)NaI(Tl) detector. This set up has been made for the study of γ-decay of GDR based on high spin states and ultra-dipole radiations. The array has been provided with the following features: a) TOF discrimination against neutrons, b) pile up detection and elimination, c) active and passive shielding to cut down background and d) an array of trigger counters for multiplicity dependence measurements. The well known program EGS4 has been used to determine the response of the array for γ-rays in the energy region 5-40 MeV and several test measurements have been carried out to confirm the validity of the calculated response functions. Some typical γ-ray spectra from α and 16O induced reactions measured at VECC, Calcutta and Pelletron accelerator at TIFR are also shown.

Item Type:Article
Source:Copyright of this article belongs to Indian Academy of Sciences.
Keywords:5-40 Mev Gamma-ray; Hexagonal NaI(TL) Detector Array; Time of Flight; Pile Up; Pulse Shape Discrimination; Response; Folding; Unfolding
ID Code:37376
Deposited On:22 Apr 2011 10:34
Last Modified:17 May 2016 20:17

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