Thermally stimulated luminescence and electron paramagnetic resonance studies of actinide doped calcium chloro phosphate
Abstract
Electron paramagnetic resonance [EPR] and thermally stimulated luminescence [TSL] studies were conducted on self [α]-irradiated239Pu doped calcium chloro phosphate andγ-irradiated239Pu/238UO 2 2+ doped calcium chloro phosphate to elucidate the role of the electron/hole traps in thermally stimulated reactions and to obtain trap parameters from both TSL and EPR data. TSL glow peaks around 135 K (# peak 1), 190 K (# peak 2), 435 K (# peak 5) and 490 K (# peak 7) were observed and their spectral characteristics have shown that Pu3+ and UO 6 6− act as luminescent centres in calcium chloro phosphate with respective dopants. EPR studies have shown the formation of the radical ions H0, PO 4 2− , O−, O 2 − and [ClO]2− under different conditions. Whereas the [ClO]2− radical being stable up to 700 K, was not found to have any role in TSL processes, the thermal destruction of other centres was found to be primarily responsible for the TSL peaks observed. The trap depth values were determined both by using the TSL data and also the temperature variation of EPR spectra of these centres.
Keywords
Thermally stimulated luminescence electron paramagnetic resonancePACS Nos
78·55 61·80 78·60 33·35Preview
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References
- Blasse G and Van Den Heuvel 1974J. Lumin. 8 406CrossRefGoogle Scholar
- Booth A H 1954Can. J. Chem. 32 214CrossRefGoogle Scholar
- Budin J P, Michel J C and Auzel F 1979J. Appl. Phys. 50 641CrossRefADSGoogle Scholar
- Cevc P. Schara M and Ravnik C 1972Radiat. Res. 51 581CrossRefGoogle Scholar
- Dalvi A G I, Sastry M D and Joshi B D 1980J. Phys. E13 1106ADSGoogle Scholar
- Dalvi A G I, Sastry M D and Joshi B D 1983Phys. Rev. B28 2441ADSGoogle Scholar
- Dalvi A G I, Sastry M D, Seshagiri T K and Joshi B D 1984J. Phys. C17 5864ADSGoogle Scholar
- Fukuda Y, Mizuguchi K, Yokota S and Takeuchi N 1987Radiat. Prot. Dosimetry 70 89Google Scholar
- Garlick G F J and Gibson A F 1948Proc. Phys. Soc. 60 574CrossRefADSGoogle Scholar
- Hoogenstratten W 1958Philips Res. Rep. 13 515Google Scholar
- Huzimura R, Asahi K and Takenaga M 1980Nucl. Instrum. Meth. 175 8CrossRefADSGoogle Scholar
- Jimenz de Castro M and Alvarez Rivas J L 1979Phys. Rev. B19 6984Google Scholar
- Jong K P, Krol K M and Blasse G 1979J. Lumin. 20 241CrossRefGoogle Scholar
- Knottnerus D I M, Denhartog H W and Vanderlugt W 1972Phys. Status Solidi A13 505ADSGoogle Scholar
- Knottnerus D I M, and Den hartog H W 1975Phys. Status Solidi A29 183ADSGoogle Scholar
- Lapraz D, Baumer A and Iacconi P 1979Phys. Status Solidi A54 605ADSGoogle Scholar
- Lapraz D 1980 Thesis, University of NiceGoogle Scholar
- Lapraz D and Baumer A 1981Phys. Status Solidi A68 309ADSGoogle Scholar
- Lapraz D, Gaume F and Barland M 1985Phys. Status Solidi A89 249ADSGoogle Scholar
- Marfunin A S 1979Spectroscopy, luminescence and radiation centres in minerals (New York: Springer Verlag) pp 258–261Google Scholar
- McLaughlin R D, White R, Edelstein N and Conway J G 1968J. Chem. Phys. 48 967CrossRefADSGoogle Scholar
- Meijerink A and Blasse G 1990J. Phys.: Condens. Matter 2 3169Google Scholar
- Mithlesh Kumar, Dalvi A G I and Sastry M D 1988J. Phys. C21 5923ADSGoogle Scholar
- Natarajan V, Dalvi A G I and Sastry M D 1986Radiat. Eff. 88 45CrossRefGoogle Scholar
- Natarajan V, Dalvi A G I and Sastry M D 1988J. Phys. 21 5913CrossRefADSGoogle Scholar
- Pappalardo R G, Walsh J and Hunt R B 1983J. Electrochem. Soc. 130 2087CrossRefGoogle Scholar
- Prener J S 1967J. Electrochem. Soc. 114 77CrossRefGoogle Scholar
- Roufosse A, Stapelbroek M, Bartram R H and Gilliam O R 1974Phys. Rev. 9 855ADSCrossRefGoogle Scholar
- Seshagiri T K, Dalvi A G I and Sastry M D 1988J. Phys. C21 5891ADSGoogle Scholar
- Stacy J J, Edelstein N and McLaughlin R D 1972J. Chem. Phys. 57 4980CrossRefADSGoogle Scholar