Positron annihilation and optical studies of natural brown type i diamonds

Paul Guagliardo; Keal Byrne; J. Chapman; K. Sudarshan; Sergey Samarin; James Williams

doi:10.1016/j.diamond.2013.04.011

Positron annihilation and optical studies of natural brown type i diamonds

Paul Guagliardo, Keal Byrne, J. Chapman, K. Sudarshan, Sergey Samarin, James Williams

Centre for Microscopy, Characterisation & Analysis

Research output: Contribution to journal › Article › peer-review

5 Citations (Scopus)

Abstract

Positron annihilation measurements of natural brown type I diamonds revealed that they contain monovacancy-type defects and large vacancy clusters. The latter defect type was absent in clear diamonds. Both the intensity of the positron vacancy cluster lifetime and the S-parameter were found to increase with the intensity of brown colouration determined by optical absorption measurements. No correlation was found between the nitrogen content and the positron annihilation parameters. © 2013 Elsevier B.V.

Original language	English
Pages (from-to)	37-40
Journal	Diamond and Related Materials
Volume	37
DOIs	https://doi.org/10.1016/j.diamond.2013.04.011
Publication status	Published - 2013

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title = "Positron annihilation and optical studies of natural brown type i diamonds",

abstract = "Positron annihilation measurements of natural brown type I diamonds revealed that they contain monovacancy-type defects and large vacancy clusters. The latter defect type was absent in clear diamonds. Both the intensity of the positron vacancy cluster lifetime and the S-parameter were found to increase with the intensity of brown colouration determined by optical absorption measurements. No correlation was found between the nitrogen content and the positron annihilation parameters. {\textcopyright} 2013 Elsevier B.V.",

author = "Paul Guagliardo and Keal Byrne and J. Chapman and K. Sudarshan and Sergey Samarin and James Williams",

year = "2013",

doi = "10.1016/j.diamond.2013.04.011",

language = "English",

volume = "37",

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journal = "Diamond and Related Materials",

issn = "0925-9635",

publisher = "Elsevier",

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TY - JOUR

T1 - Positron annihilation and optical studies of natural brown type i diamonds

AU - Guagliardo, Paul

AU - Byrne, Keal

AU - Chapman, J.

AU - Sudarshan, K.

AU - Samarin, Sergey

AU - Williams, James

PY - 2013

Y1 - 2013

N2 - Positron annihilation measurements of natural brown type I diamonds revealed that they contain monovacancy-type defects and large vacancy clusters. The latter defect type was absent in clear diamonds. Both the intensity of the positron vacancy cluster lifetime and the S-parameter were found to increase with the intensity of brown colouration determined by optical absorption measurements. No correlation was found between the nitrogen content and the positron annihilation parameters. © 2013 Elsevier B.V.

AB - Positron annihilation measurements of natural brown type I diamonds revealed that they contain monovacancy-type defects and large vacancy clusters. The latter defect type was absent in clear diamonds. Both the intensity of the positron vacancy cluster lifetime and the S-parameter were found to increase with the intensity of brown colouration determined by optical absorption measurements. No correlation was found between the nitrogen content and the positron annihilation parameters. © 2013 Elsevier B.V.

U2 - 10.1016/j.diamond.2013.04.011

DO - 10.1016/j.diamond.2013.04.011

M3 - Article

SN - 0925-9635

VL - 37

SP - 37

EP - 40

JO - Diamond and Related Materials

JF - Diamond and Related Materials

ER -

Positron annihilation and optical studies of natural brown type i diamonds

Abstract

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