Study of annihilation processes of positrons in polystyrene-related polymers

Y. Honda; T. Shimada; M. Tashiro; N. Kimura; Y. Yoshida; G. Isoyama; S. Tagawa

doi:10.1016/j.radphyschem.2006.03.029

Study of annihilation processes of positrons in polystyrene-related polymers

Y. Honda, T. Shimada, M. Tashiro, N. Kimura, Y. Yoshida, G. Isoyama, S. Tagawa

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

8 Citations (Scopus)

Abstract

The positrons injected into a polymer annihilate with electrons through several kinds of processes influenced by environmental conditions. The AMOC is an appropriate method to investigate the influences of functional groups in polymer on positron and positronium annihilation process. The experiments were performed for polystyrene-related materials. The results showed that the S-parameters relating to ortho-positronium were higher than those relating to free annihilation in all samples and the annihilation process was affected by functional group.

Original language	English
Pages (from-to)	169-171
Number of pages	3
Journal	Radiation Physics and Chemistry
Volume	76
Issue number	2
DOIs	https://doi.org/10.1016/j.radphyschem.2006.03.029
Publication status	Published - 2007 Feb 1
Externally published	Yes

Keywords

AMOC
Poly(4-bromostyrene)
Poly(4-chlorostyrene)
Poly(4-vinylphenol)
Polystyrene
Polyvinyltoluene
Positron
Positronium

ASJC Scopus subject areas

Radiation

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title = "Study of annihilation processes of positrons in polystyrene-related polymers",

abstract = "The positrons injected into a polymer annihilate with electrons through several kinds of processes influenced by environmental conditions. The AMOC is an appropriate method to investigate the influences of functional groups in polymer on positron and positronium annihilation process. The experiments were performed for polystyrene-related materials. The results showed that the S-parameters relating to ortho-positronium were higher than those relating to free annihilation in all samples and the annihilation process was affected by functional group.",

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AU - Honda, Y.

AU - Shimada, T.

AU - Tashiro, M.

AU - Kimura, N.

AU - Yoshida, Y.

AU - Isoyama, G.

AU - Tagawa, S.

PY - 2007/2/1

Y1 - 2007/2/1

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AB - The positrons injected into a polymer annihilate with electrons through several kinds of processes influenced by environmental conditions. The AMOC is an appropriate method to investigate the influences of functional groups in polymer on positron and positronium annihilation process. The experiments were performed for polystyrene-related materials. The results showed that the S-parameters relating to ortho-positronium were higher than those relating to free annihilation in all samples and the annihilation process was affected by functional group.

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KW - Poly(4-bromostyrene)

KW - Poly(4-chlorostyrene)

KW - Poly(4-vinylphenol)

KW - Polystyrene

KW - Polyvinyltoluene

KW - Positron

KW - Positronium

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