Transient absorption spectra and relaxation kinetics in Nb-doped PbWO4 scintillating crystals

S. Chernov; D. Millers; L. Grigorjeva; V. Pankratov

doi:10.1016/S1350-4487(01)00079-8

Transient absorption spectra and relaxation kinetics in Nb-doped PbWO₄ scintillating crystals

S. Chernov^*
, D. Millers
, L. Grigorjeva
, V. Pankratov

^*Šī darba korespondējošais autors

Spektroskopijas laboratorija, Cietvielu fizikas institūts

University of Latvia

Pētījuma izpildes rezultāts: Devums žurnālam › Zinātniskais raksts (žurnālā) › koleģiāli recenzēts

Kopsavilkums

The spectra and relaxation kinetics of absorption induced by a pulsed electron beam were studied for undoped and Nb-doped PbWO₄ single crystals. A significant influence of Nb doping on transient absorption was found. The influence of Nb doping on the relaxation kinetics is proposed to be due to an oxygen vacancy involving electron-hole recombination. A delay was observed (35-50 ns) between the growth of F-centers and the irradiation pulse. A large portion of the F-centers decays within ∼16 μs due to recombination with mobile holes. The prolonged recombination processes are responsible for the decrease of the scintillation yield in PbWO₄ : Nb crystals.

Oriģinālvaloda	Angļu
Lapas (no-līdz)	659-662
Lapu skaits	4
Žurnāls	Radiation Measurements
Sējums	33
Izdevuma numurs	5
DOIs	https://doi.org/10.1016/S1350-4487(01)00079-8
Publikācijas statuss	Publicēts - 2001

Piekļuve Dokumentiem

10.1016/S1350-4487(01)00079-8

Citi faili un saites

Saite uz publikāciju Scopus

Citēt šo

@article{029910635ff54760bedda36b0ca20ea9,

title = "Transient absorption spectra and relaxation kinetics in Nb-doped PbWO4 scintillating crystals",

abstract = "The spectra and relaxation kinetics of absorption induced by a pulsed electron beam were studied for undoped and Nb-doped PbWO4 single crystals. A significant influence of Nb doping on transient absorption was found. The influence of Nb doping on the relaxation kinetics is proposed to be due to an oxygen vacancy involving electron-hole recombination. A delay was observed (35-50 ns) between the growth of F-centers and the irradiation pulse. A large portion of the F-centers decays within ∼16 μs due to recombination with mobile holes. The prolonged recombination processes are responsible for the decrease of the scintillation yield in PbWO4 : Nb crystals.",

keywords = "PbWO, PbWO : Nb, Scintillation yield, Transient absorption",

author = "S. Chernov and D. Millers and L. Grigorjeva and V. Pankratov",

year = "2001",

doi = "10.1016/S1350-4487(01)00079-8",

language = "English",

volume = "33",

pages = "659--662",

journal = "Radiation Measurements",

issn = "1350-4487",

publisher = "Elsevier Ltd",

number = "5",

}

TY - JOUR

T1 - Transient absorption spectra and relaxation kinetics in Nb-doped PbWO4 scintillating crystals

AU - Chernov, S.

AU - Millers, D.

AU - Grigorjeva, L.

AU - Pankratov, V.

PY - 2001

Y1 - 2001

N2 - The spectra and relaxation kinetics of absorption induced by a pulsed electron beam were studied for undoped and Nb-doped PbWO4 single crystals. A significant influence of Nb doping on transient absorption was found. The influence of Nb doping on the relaxation kinetics is proposed to be due to an oxygen vacancy involving electron-hole recombination. A delay was observed (35-50 ns) between the growth of F-centers and the irradiation pulse. A large portion of the F-centers decays within ∼16 μs due to recombination with mobile holes. The prolonged recombination processes are responsible for the decrease of the scintillation yield in PbWO4 : Nb crystals.

AB - The spectra and relaxation kinetics of absorption induced by a pulsed electron beam were studied for undoped and Nb-doped PbWO4 single crystals. A significant influence of Nb doping on transient absorption was found. The influence of Nb doping on the relaxation kinetics is proposed to be due to an oxygen vacancy involving electron-hole recombination. A delay was observed (35-50 ns) between the growth of F-centers and the irradiation pulse. A large portion of the F-centers decays within ∼16 μs due to recombination with mobile holes. The prolonged recombination processes are responsible for the decrease of the scintillation yield in PbWO4 : Nb crystals.

KW - PbWO

KW - PbWO : Nb

KW - Scintillation yield

KW - Transient absorption

UR - https://www.scopus.com/pages/publications/0034742070

U2 - 10.1016/S1350-4487(01)00079-8

DO - 10.1016/S1350-4487(01)00079-8

M3 - Article

AN - SCOPUS:0034742070

SN - 1350-4487

VL - 33

SP - 659

EP - 662

JO - Radiation Measurements

JF - Radiation Measurements

IS - 5

ER -