caa a22 4500 463230159 CHVBK 20180405153239.0 cr unu---uuuuu 170326e20070201xx s 000 0 eng 10.1007/s10853-006-0516-7 doi (NATIONALLICENCE)springer-10.1007/s10853-006-0516-7 Effect of gamma irradiation on the optical properties of CR-39 polymer [Elektronische Daten] [Tanu Sharma, Sanjeev Aggarwal, Shyam Kumar, V. Mittal, P. Kalsi, V. Manchanda] The UV-Visible absorption spectra of virgin and gamma irradiated (20-800kGy) CR-39 polymer have been deduced by using Shimadzu Double beam Double Monochromator UV-Visible Spectrophotometer (UV-2550). The existence of the peaks, their shifting and broadening as a result of gamma irradiation has been discussed. Finally the indirect and direct band gap in virgin and gamma irradiated CR-39 has been determined. The values of indirect band gap have been found to be lower than the corresponding values of direct band gap. Springer Science+Business Media, LLC, 2007 Sharma Tanu Department of Physics, Kurukshetra University, 136 119, Kurukshetra, India aut Aggarwal Sanjeev Department of Physics, Kurukshetra University, 136 119, Kurukshetra, India aut Kumar Shyam Department of Physics, Kurukshetra University, 136 119, Kurukshetra, India aut Mittal V. Department of Physics, Punjabi University, 147 001, Patiala, India aut Kalsi P. Radiochemistry Division, Bhabha Atomic Research Centre, 400 085, Mumbai, India aut Manchanda V. Radiochemistry Division, Bhabha Atomic Research Centre, 400 085, Mumbai, India aut Journal of Materials Science Kluwer Academic Publishers-Plenum Publishers; http://www.springer-ny.com 42/4(2007-02-01), 1127-1130 0022-2461 42:4<1127 2007 42 10853 https://doi.org/10.1007/s10853-006-0516-7 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s10853-006-0516-7 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Sharma Tanu Department of Physics, Kurukshetra University, 136 119, Kurukshetra, India aut NATIONALLICENCE 700 1- Aggarwal Sanjeev Department of Physics, Kurukshetra University, 136 119, Kurukshetra, India aut NATIONALLICENCE 700 1- Kumar Shyam Department of Physics, Kurukshetra University, 136 119, Kurukshetra, India aut NATIONALLICENCE 700 1- Mittal V. Department of Physics, Punjabi University, 147 001, Patiala, India aut NATIONALLICENCE 700 1- Kalsi P. Radiochemistry Division, Bhabha Atomic Research Centre, 400 085, Mumbai, India aut NATIONALLICENCE 700 1- Manchanda V. Radiochemistry Division, Bhabha Atomic Research Centre, 400 085, Mumbai, India aut NATIONALLICENCE 773 0- Journal of Materials Science Kluwer Academic Publishers-Plenum Publishers; http://www.springer-ny.com 42/4(2007-02-01), 1127-1130 0022-2461 42:4<1127 2007 42 10853 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer