Positron annihilation in α-HgI2

Y. F. Nicolau; P. Moser; C. Corbel

doi:10.1016/0168-9002(89)91352-1

Positron annihilation in α-HgI₂

Y. F. Nicolau
, P. Moser
, C. Corbel

LETI (CEA-Technologies Avancees)
Univ. Joseph Fourier-Grenoble 1
Institut National des Sciences et Techniques Nucléaires

Résultats de recherche: Contribution à un journal › Article › Revue par des pairs

Résumé

The lifetime of the delocalized positrons in α-HgI₂ crystals is found to be 320±4 ps. Some crystals grown from the vapor phase in an excess of iodine have native mercury vacancies. The lifetime of positrons localized in mercury vacancies is 360±5 ps. Some crystals grown in unstabilized solutions with respect to added iodine show shorter lifetime components of 180-200 ps attributed to positron annihilation inside mercury-rich and/or impurity-rich clusters. Other crystals show both shorter and longer lifetime components than the lifetime in the bulk, indicating the coexistence of mercury vacancies with clusters rich in mercury interstitials and/or impurities. The energy resolution of the γ-ray detectors is correlated to the positron-lifetime spectra of the crystals.

langue originale	Anglais
Pages (de - à)	167-171
Nombre de pages	5
journal	Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment
Volume	283
Numéro de publication	2
Les DOIs	https://doi.org/10.1016/0168-9002(89)91352-1
état	Publié - 1 nov. 1989
Modification externe	Oui

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10.1016/0168-9002(89)91352-1

Contient cette citation

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title = "Positron annihilation in α-HgI2 ",

abstract = "The lifetime of the delocalized positrons in α-HgI2 crystals is found to be 320±4 ps. Some crystals grown from the vapor phase in an excess of iodine have native mercury vacancies. The lifetime of positrons localized in mercury vacancies is 360±5 ps. Some crystals grown in unstabilized solutions with respect to added iodine show shorter lifetime components of 180-200 ps attributed to positron annihilation inside mercury-rich and/or impurity-rich clusters. Other crystals show both shorter and longer lifetime components than the lifetime in the bulk, indicating the coexistence of mercury vacancies with clusters rich in mercury interstitials and/or impurities. The energy resolution of the γ-ray detectors is correlated to the positron-lifetime spectra of the crystals.",

author = "Nicolau, \{Y. F.\} and P. Moser and C. Corbel",

year = "1989",

month = nov,

day = "1",

doi = "10.1016/0168-9002(89)91352-1",

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TY - JOUR

T1 - Positron annihilation in α-HgI2

AU - Nicolau, Y. F.

AU - Moser, P.

AU - Corbel, C.

PY - 1989/11/1

Y1 - 1989/11/1

N2 - The lifetime of the delocalized positrons in α-HgI2 crystals is found to be 320±4 ps. Some crystals grown from the vapor phase in an excess of iodine have native mercury vacancies. The lifetime of positrons localized in mercury vacancies is 360±5 ps. Some crystals grown in unstabilized solutions with respect to added iodine show shorter lifetime components of 180-200 ps attributed to positron annihilation inside mercury-rich and/or impurity-rich clusters. Other crystals show both shorter and longer lifetime components than the lifetime in the bulk, indicating the coexistence of mercury vacancies with clusters rich in mercury interstitials and/or impurities. The energy resolution of the γ-ray detectors is correlated to the positron-lifetime spectra of the crystals.

AB - The lifetime of the delocalized positrons in α-HgI2 crystals is found to be 320±4 ps. Some crystals grown from the vapor phase in an excess of iodine have native mercury vacancies. The lifetime of positrons localized in mercury vacancies is 360±5 ps. Some crystals grown in unstabilized solutions with respect to added iodine show shorter lifetime components of 180-200 ps attributed to positron annihilation inside mercury-rich and/or impurity-rich clusters. Other crystals show both shorter and longer lifetime components than the lifetime in the bulk, indicating the coexistence of mercury vacancies with clusters rich in mercury interstitials and/or impurities. The energy resolution of the γ-ray detectors is correlated to the positron-lifetime spectra of the crystals.

U2 - 10.1016/0168-9002(89)91352-1

DO - 10.1016/0168-9002(89)91352-1

M3 - Article

AN - SCOPUS:0024772053

SN - 0168-9002

VL - 283

SP - 167

EP - 171

JO - Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment

JF - Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment

IS - 2

ER -

Positron annihilation in α-HgI2

Résumé

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Contient cette citation

Positron annihilation in α-HgI₂