Indian Journal of Pure and Applied Physics VOLUME 50 NUMBER 7 JULY 2012

Special Issue on Emerging Trends in Accelerator Radiation Safety  — Part I [This special issue is based on the papers presented at International Conference on Accelerator Radiation Safety (ICARS2011) at Bhabha Atomic Research Centre, Mumbai 400 085 during November 16-18, 2011] CONTENTS

Foreword
A K Ghosh	421
Preface
P K Sarkar, Sunil C & S P Tripathy	423
Papers
Neutron detector development and measurements around particle accelerators         Takashi Nakamura	427
Role of beam dynamics studies for accelerator safety         P Singh*, S V L S Rao & Rajni Pande	439
A state of the RIKEN radioisotope beam factory         Y Uwamino*, H Sakamoto, R Higurashi-Hirunuma, H Mukai, H Fukuda & A Akashio	442
The Medley facilities past and future: Fast neutron nuclear data for science and industry         S Pomp	446
Spectrometer for pulsed and continuous electron and photon radiation         R Behrens	450
Nuclear physics experiments using accelerators         A Chatterjee	454
Low energy pulsed X-ray ion chamber monitor for accelerator safety         P M Dighe*, L P Kamble, D Das & C K Pithawa	458
Experimental determination of Bremsstrahlung dose rate due to accidental beam loss in Indus-1 storage ring         G Haridas, D Verma, P K Sahani, M K Nayak*, K K Thakkar & P K Sarkar	462
Scattering of neutrons in a high energy proton accelerator enclosure and the production of 41Ar and 14C activity using FLUKA            K Biju*, C Sunil & P K Sarkar	465
Bremsstrahlung data in concrete shielding         H C Manjunatha*, B M Chandrika & B Rudraswamy	469
Assessment of cell damages induced by gamma rays and pulsed electron beam at different dose rates         S Acharya, P Joseph, N N Bhat, G Sanjeev & Y Narayana*	474
Measurement and analysis of the radio frequency radiation (non- ionizing) in dc accelerator based 14 MeV neutron generator facility at BARC         Manjiri Pande*& Niranjan Patel	478
Design, development and characterization of tetrode type electron gun system for generation of low energy electrons         Avinash V Deore, B J Patil, V N Bhoraskar & S D Dhole*	482
Grey level analysis of 2D images to determine length of a-tracks in CR-39 detectors         Sabyasachi Paul*, M Pandey, S P Tripathy & P K Sarkar	486
Experimental measurement of coherent to incoherent cross-section ratio of elements in the range 6 ≤ Z ≤ 82 for 59.54 keV gamma photons         M P Singh, Amandeep Sharma, Bhajan Singh & B S Sandhu*	490
Bremsstrahlung source term determination for 450MeV electrons         M K Nayak*, G Haridas, T K Sahu, S Dashora, R V Nandedkar & P K Sarkar	494
Estimation of induced activity in superconducting cyclotron at VECC: Monte Carlo calculations         S Chatterjee* & T Bandyopadhyay	498
Unfolding an under-determined neutron spectrum using genetic algorithm based Monte Carlo         Vitisha Suman* & P K Sarkar	501
Photon and neutron dose evaluation in experimental hall of Indus-1 Synchrotron Radiation Source         Dimple Verma*, T K Sahu, Mukesh Khare, S Dashora, Saleem Khan, M K Nayak, P K Sahani, G Haridas & P K Sarkar	505
Production of long-lived 26Al and 24Na from neutron interaction in Al target         P K Saran, Maitreyee Nandy, P K Sarkar & Sneh Lata Goyal*	509
Neutron measurement in 12,13C + 27Al system using CR-39 detectors and neutron rem meter         G S Sahoo*, S P Tripathy, A A Shanbhag, C Sunil, D S Joshi & P K Sarkar	513
Monte Carlo simulation and measurement of X-ray dose from 9 MeV RF electron LINAC for cargo scanning         Nishant Chaudhary*, D Bhattacharjee, V Yadav, S D Sharma, S Acharya, K P Dixit & K C Mittal	517
One step synthesis of Cu+ activated Li2BPO5 low Z phosphor for thermoluminescence dosimetry         S J Dhoble*, S P Puppalwar, N S Dhoble & A K Mohanty	520
Comparison of methodologies of gamma ray spectrometer and X-ray fluorescence         P D Cunha & Y Narayana*	524
Shield design for a hull neutron monitor using Monte Carlo techniques         S Anand*, Kapil Deo Singh & V K Sharma	527
Angular distribution of the ambient neutron dose equivalent from incidence of alpha particles on thick Al target         A A Shanbhag*, S P Tripathy, G S Sahoo, C Sunil, M Nandy & P K Sarkar	531
Device for mechanoluminescence excitation by applying gradually varying pressure on the sample         R K Rai*, R S Kher, S A Khan, S J Dhoble & A K Upadhyay	534