MOSSBAUER-EFFECT, X-RAY-DIFFRACTION AND INFRARED STUDIES OF THE EFFECT OF GAMMA-IRRADIATION ON THE MOLECULAR BONDING OF MELANTERITE

Authors
SALLAM HA EISSA NA SHETA NH SOLIMAN MA ELFOULY MH
Citation
Ha. Sallam et al., MOSSBAUER-EFFECT, X-RAY-DIFFRACTION AND INFRARED STUDIES OF THE EFFECT OF GAMMA-IRRADIATION ON THE MOLECULAR BONDING OF MELANTERITE, Journal of physics and chemistry of solids, 55(11), 1994, pp. 1175-1180
Citations number
14
Categorie Soggetti
Physics, Condensed Matter",Chemistry
Journal title
Journal of physics and chemistry of solids → ACNP
ISSN journal
00223697
Volume
55
Issue
11
Year of publication
1994
Pages
1175 - 1180
Database
ISI
SICI code
0022-3697(1994)55:11<1175:MXAISO>2.0.ZU;2-P
Abstract
Mossbauer effect (ME), X-ray diffraction (XRD) and infrared (i.r.) mea surements were performed on melanterite (FeSO4.7H(2)O) before and afte r irradiation to different gamma ray doses. The ME spectra and the XRD of the irradiated samples showed the gradual transformations of the i nitial phase and its radiolytic products. The changes in the frequency bands and Force constants of the (Fe-O), (O-H) and (S-O) groups were followed by i.r. measurements. These variations were discussed, for Fe -O bonding, on the basis of the Fe-O bond length which was calculated from the isomer shift (IS) values of the radiolytic products.