Phase-I Project Title : ' Analysis of the nature and geometry of defects in compound semiconductors using nuclear technique.'
Funded By : SERC, DST, GOVT. OF INDIA

Phase-II Project Title: " Investigation of defects and positron states in II-VI Semiconductor materials"
Funded by SERC,DST, PROJECT NO . SR/S2/CMP-25/2002.

Project Title : ' Defect road mapping of heavy Ion -irradiated infrared detector materials by applying positron lifetime spectroscopy.'
Funded By : IUC, KOLKATA CENTRE, DAEF, UGC,GOVT. OF INDIA
Status : on-going

Recent Research Papers presented in conferences / symposia

Accumulation of Scientific Knowledge Is The Password For Success in Developing Scientific Attitude In Society - A Policy Approach, A. Sen Gupta, XXII Ind. Soc. Sci. Cong. , March 13-18, 1999, Gandhigram Rural Institute, Gandhigram, Dindigul, Tamil Nadu, India.

"Annealing Study of Native Defects in Sn doped n - GaAs" S. Datta, S.Bandopadhyay, S. Gugre, D. Das, A. Saha, A. Sen Gupta, Discussion Meeting On Condensed
Matter Physics, November 16-17, 2001, IIT, Kharagpur.

'Detection of Non-Stoichiometric Defects in Cd 0.96Zn0.04Te Using Positron Annihilation Technique' A.Saha, B. Nath, S. Gugre, D. Das and A.SenGupta
CM Days -02, National Symposium in Condensed Matter Physics, Aug29-31,2002, Bhagalpur University, Bhagalpur, Bihar.

'Kinetics of Hg-Vacancies in As-Grown Hg 0.8 Cd 0.2 Te Using Positron Annihilation Technique 'A.Saha, B. Nath, S. Gugre, D. Das and A.SenGupta- CM Days -02, National Symposium in Condensed Matter Physics, Aug29-31,2002, Bhagalpur University, Bhagalpur, Bihar.

PAPERS UNDER PREPARATION

'Kinetics of Hg vacancies in as-grown Hg 0.2 Cd0.8 Te using Positron Annihilation Technique', A.Sen Gupta et al.

'Detection of non-stoichiometric defects in Cd 0.96 Zn 0.04 Te using Positron Technique', A.Sen Gupta et al.

' Study of native defects in n- type Sn doped GaAs using Positron Annihilation Technique', A.Sen Gupta et al.

' Study of cation distribution in Li-Mg Ferrites using 57Fe Mossbauer spectroscopy ', A.Sen Gupta et al.

9 years & 4 months in Visva-Bharati
7 months in S.A.Jaipuria College, Calcutta University
7 months in BITS, Pillani, Rajasthan (Deemed University)

Visiting Scientist at CEN, GRENOBLE, FRANCE , 1985
Visiting Fellow at SACLAY, PARIS, 1986.
National Award as "Young Physicst " in Aug,1987 by Indian Physical Society
Visiting Scientist at INDIRA GANDHI CENTRE FOR ATOMIC RESEARCH, KALPAKKAM, 1994.
Visiting Scientist at IOP, BBSR, ORISSA, 1998
Visiting Scientist at IUC,DAEF, UGC, 2001

Invited as Visiting Scientist & Lecturer By Martin-Luther University, Germany , will start on 1st of May and end on 31st of Aug,2003.
Invited Talks Delivered at : BITS, PILANI, RAJASTHAN, FEB22, 1993
         IGCAR, KALPAKKAM, OCT 19, 1994.
        OSMANIA UNIVERSITY, HYDERABAD, JUNE 21, 1996.
        BOSE INSTITUTE, CALCUTTA, SEP12, 1997.
        VISVA-BHARATI, SANTINIKETAN, DEC17,2000.
        SSPL, DRDO, N. DELHI, IST MARCH,2001.
        IIT, KHARAGPUR, 30TH JANUARY,2002.
        Nuclear Science Center, New Delhi, November 12,2002

MINISTRY OF DEFENCE, GOVERNMENT OF INDIA REQUESTED THROUGH DRDO ( R&D ORG ) FOR "ACQUISATION OF SERVICE OF RESEARCH EXPERTISATION" WHICH WAS ACCEPTED AND NECESSARY STEPS WERE TAKEN TO PROVIDE THE SPECIFIC REQUEST.