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Titolo:
A study on La-doped PbWO4 scintillating crystal
Autore:
Tang, XF; Gu, M; Tong, HY; Liang, L; Yao, MZ; Chen, LY; Liao, JY; Shen, BF; Qu, XD; Yin, ZW; Xu, WX; Wang, JC;
Indirizzi:
Tongji Univ, Dept Phys, Shanghai 200092, Peoples R China Tongji Univ Shanghai Peoples R China 200092 ghai 200092, Peoples R China Chinese Acad Sci, Lab Funct Inorgan Mat, Shanghai 200050, Peoples R China Chinese Acad Sci Shanghai Peoples R China 200050 200050, Peoples R China Shanghai Key Lab Met Funct Mat, Shanghai 200940, Peoples R China Shanghai Key Lab Met Funct Mat Shanghai Peoples R China 200940 s R China
Titolo Testata:
ACTA PHYSICA SINICA
fascicolo: 10, volume: 49, anno: 2000,
pagine: 2007 - 2010
SICI:
1000-3290(200010)49:10<2007:ASOLPS>2.0.ZU;2-T
Fonte:
ISI
Lingua:
CHI
Soggetto:
LEAD TUNGSTATE CRYSTALS; RADIATION HARDNESS;
Keywords:
La-doped PbWO4 crystal; positron annihilation lifetime spectrum; X-ray photoelectron spectrum; defects;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Physical, Chemical & Earth Sciences
Citazioni:
10
Recensione:
Indirizzi per estratti:
Indirizzo: Tang, XF Tongji Univ, Dept Phys, Shanghai 200092, Peoples R China Tongji Univ Shanghai Peoples R China 200092 92, Peoples R China
Citazione:
X.F. Tang et al., "A study on La-doped PbWO4 scintillating crystal", ACT PHY C E, 49(10), 2000, pp. 2007-2010

Abstract

The changes of defects in PbWO4 crystal caused by La dopant have been studied by means of positron annihilation lifetime and X-ray photoelectron spectrum (XPS). The results show that La dopant enhance the concentration of lead vacancy (V-Pb) which can be described as the positron capture center in PbWO4 crystal,and lead vacancy will furthermore introduce low-valent oxygencenter. We discuss the mechanism of La doped in PbWO4, and consider that oxygen vacancy is restrained by doping of La, while lead vacancy density is increased by La dopant.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 02/04/20 alle ore 02:50:38