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Volume 358 - 36th International Cosmic Ray Conference (ICRC2019) - CRD - Cosmic Ray Direct
Cosmic ray detection and Identification at Antarctica in a ground level experiment with NTD
S. Dey,* R. Bhattacharyya, C.f.A.P.S.S. Bose Institute, K.7.0. India, S.K. Ghosh, 1.f.A.P.S.S. Bose Institute, 2.D.o.P. Bose Institute, K.7.0. India, A. Maulik, C.f.A.P.S.S. Bose Institute, K.7.0. India, S. Raha, C.f.A.P.S.S. Bose Institute, K.7.0. India, D. Syam, C.f.A.P.S.S. Bose Institute, K.7.0. India
*corresponding author
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Pre-published on: 2019 July 22
Published on:
Abstract
Searching for Strangelets (small pieces of strongly interacting matter comprising of nearly equal numbers of u, d and s quarks) in cosmic rays, an experiment has been done at Antarctica using passive detectors. We have exposed CR-39 and PET (polyethylene terephthalate sheets) at Maitri and Bharati experimental stations of India. High detection threshold detector PET limits the detection of cosmic rays to relatively high Z and low energy particles. In this report we will present charge response parameters (Vt /Vb ) for charged cosmic ray particles observed at ground level. Track parameters viz. diameters, depths and incidence angles of observed charged particles in CR-39 show wide distributions. Identification of different groups of particles has been done from the distribution of charge response parameters (V t /V b ) with the help of the calibration curve of CR-39. Flux of charged particles observed in CR-39 is ~6.2x10 -4 /(cm2.sec.sr) at both the places.
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