- Full text:
- PDF (eReader) / PDF (Download) (1510 kB)
ESR studies of radiophotoluminescence (RPL) centers in silver-activated phosphate glass were performed after the glasses had been γ-irradiated at 77°K. It is shown that the silver ions act as traps for both electrons and positive holes. By the separate formation of electron-trapped silver centers and hole-trapped silver center, it was verified that all these silver centers act as RPL centers. It was found that a positive hole in PO 4 tetrahedron is transfered to Ag + ion and this process is the main reason of RPL build-up. Stabilization phenomenon of RPL centers was found. It was found that alkali and or silver ion migration is necessary for stabilization. The reason why RPL in these glasses has high stability and builds-up after γ-irradiation was clarified. The resonances which are considered due to exchange coupled pairs, triads and higher aggregates of electron-trapped silver centers were found.
References
- 1 J. H.Sculman, R. J.Ginther and C. C.Klick: J. appl. Phys. 22 (1951) 1497; J. H.Schulman, W.Schurcliff, R. J.Ginther and F. H.Attix: Nucleonics 11 (1953) 52. Google Scholar
- 2 R.Yokota and S.Nakajima: Health Physics 11 (1965) 241. Crossref, Google Scholar
- 3 W. A.Weyl, J. H.Schulman, R. J.Ginther and L. W.Evans: J. Electrochem. Soc. 97 (1949) 70. Crossref, Google Scholar
- 4 H. W.Etzel and J. H.Schulman: J. chem. Phys. 22 (1954) 1549. Crossref, Google Scholar
- 5 C. J.Delbecq, W.Hays, M. C. M.O'Brien and P. H.Yuster: Proc. Roy. Soc. A271 (1963) 243. Crossref, Google Scholar
- 6 R. F.Tucker: Advance in Glass Technology, (VI International Congress on Glass, 1962), p. 103. Google Scholar
- 7 R.Yokota and H.Imagawa: J. Phys. Soc. Japan 20 (1965) 1537. Link, Google Scholar
- 8 R.Yokota, S.Nakajima and H.Osawa: Toshiba Review (Oversea Edition 1962), Spring 41. Google Scholar
- 9 G.Breit and I. I.Rabi: Phys. Rev. 38 (1931) 2082. Crossref, Google Scholar
- 10 A.Bleaney: Phil. Mag. 42 (1951) 441. Crossref, Google Scholar
- 11 L.Shields: J. chem. Phys. 44 (1966) 1685. Crossref, Google Scholar
- 12 J. W. H.Schreurs and R. F.Tucker: Physics of Non-Crystalline Solids, (North-Holland Publishing Co. Amsterdam, 1965) p. 619. Google Scholar
- 13 O. G.Holmes and D. S.McClure: J. chem. Phys. 26 (1959) 1686. Crossref, Google Scholar
- 14 C. P.Slichter: Phys. Rev. 99 (1955) 479. Crossref, Google Scholar
- 15 for example, R.Neiman and D.Kivelson: J. chem. Phys. 35 (1961) 156. Crossref, Google Scholar
- 16 T.Vänngard and R.Aasa: Paramagnetic Resonance ed. W.Low, (Academic Press, New York and London, 1963), Vol. II, by p. 509. Google Scholar
- 17 S. E.Harrison and J. M.Assour: Paramagnetic Resonance ed. W.Low, (Academic Press, 1963), Vol. II, p. 858. Google Scholar
- 18 J.Owen: J. appl. Phys. 32 (1961) 213S. Crossref, Google Scholar
- 19 A.Bishay: International Congress on Glass, Tokyo and Kyoto, (1966). Google Scholar
- 20 R. F.Tucker: Advance in Glass Tehnology (VI International Congress on Glass, 1962), p. 103; J. S.Troud, J. W.Schreus and R. F.Trucker: VII International Congress on Glass, Brussels, (1965). Google Scholar
- 21 L.Shields and M. C. R.Symons: Molecular Phys. 11 (1966) 57; L.Shields: Trans Faraday Soc. 62 (1966) 1042. Crossref, Google Scholar