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Ravindrachary, V. and Chandrashekara, A. and Sreepad, H. R. and Sreeramalu, V. and Ranganathaiah, C. and Gopal, S. (1993) Positron lifetime study of the free-volume properties in the polymer polyacrylonitrile. Physics Letters A, 174 (5-6). pp. 428-432.
Sreepad, H. R. and Ravindrachary, V. and Chandrashekara, A. and Sreeramalu, V. and Ranganathaiah, C. and Gopal, S. (1991) Nature of Positron Trapping centers in a gamma‐Irradiated Nasicon Analogue. PHYSICA STATUS SOLIDI A-APPLIED RESEARCH, 128 (1). K1-K5.
Sreepad, H. R. and Ravindrachary, V. and Chandrashekara, A. and Sreeramalu, V. and Ranganathaiah, C. and Gopal, S. (1991) Nature of positron trapping centers in a. gamma. -irradiated nasicon analogue. Physica Status Solidi A (Applied Research), 128 (1). K1-K5.
Ravindrachary, V. and Sreeramalu, V. and Sreepad, H. R. and Chandrashekara, A. and Gopal, S. (1991) Dobbler broadened and ionic conductivity studies on NASICON analogue. Solid State Ionics, 48 (1-2). pp. 173-176.
Sreepad, H. R. and Sreeramalu, V. and Chandrashekara, A. and Ravindrachary, V. and Ranganathaiah, C. and Gopal, S. (1991) Radiation Induced Changes in the Polymer PPO. A Positron Annihilation Study. Physica Status Solidi A-Applied Research, 124 (2). pp. 441-446.
Chandrashekara, A. and Sreeramalu, V. and Sreepad, H. R. and Ravindrachary, V. and Ranganathaiah, C. and Gopal, S. (1991) Positron Lifetime Study on Microstructural Changes in Iodine‐Doped Polymer PPO. Physica Status Solidi a-Applied Research, 125 (2). pp. 509-516.
Sreepad, H. R. and Sreeramalu, V. and Chandrashekara, A. and Ravindrachary, V. and Gopal, S. (1990) Structural phase-transition in a superionic conductor na2(la,al)zr(po4)3 - positron-annihilation study. Physica Status Solidi A-Applied Research, 120 (2). pp. 411-417.
Sreeramalu, V. and Sreepad, H. R. and Chandrashekara, A. and Ravindrachary, V. and Gopal, S. (1990) Positron-annihilation studies on nasicon analogs containing cation vacancies. Bulletin of Materials Science, 13 (3). pp. 211-216.
