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Title: Neutron measurement in 12,13C + 27Al system using CR-39 detectors and neutron rem meter
Authors: Sahoo, G S
Tripathy, S P
Shanbhag, A A
Sunil, C
Joshi, D S
Sarkar, P K
Keywords: Neutron dosimetry;CR-39 track detector;Heavy ion reactions
Issue Date: Jul-2012
Publisher: NISCAIR-CSIR, India
Abstract: In this work, neutron measurements were carried out for the interaction of 60 and 67.5 MeV 12C, 57.3 and 65 MeV 13C ions with thick aluminium target by using CR-39 detectors and neutron rem meter. Both the detector systems were irradiated at different angles viz. 0°, 30°, 60°, 90° with respect to the beam direction. The normalized track density (tracks cm-2 projectile-1 at 1 m) in CR-39 detectors was correlated with the normalized dose equivalent values (µSv projectile-1 at 1 m) obtained using the neutron rem meter. The track density was found to be more in case of 13C than 12C. However in all the cases, the track density per incident projectile was found to decrease as the angle with respect to beam direction increases, indicating non-isotropic nature of neutron emission. The ratio between measured dose equivalent in rem meter to the measured track densities in CR-39 detectors was found to be (2.8±0.2) µSv cm2, which remains constant irrespective of the change in angle with respect to the beam direction as well as in neutron energy distribution, indicating a flat dose response of CR-39 detectors.
Page(s): 513-516
ISSN: 0975-1041 (Online); 0019-5596 (Print)
Appears in Collections:IJPAP Vol.50(07) [July 2012]

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