QUENCHING PROCESS OF RADIOLUMINESCENCE IN ANTHRACENE CRYSTALS.

Kohei Yokoi, Yujiro Ohba

Research output: Contribution to journalArticle

2 Citations (Scopus)

Abstract

Temperature dependences of beta -ray-excited radioluminescence and uv-light-excited photoluminescence were measured in anthracene crystals. They depend on crystals, but their ratio shows the same characteristic in all of the crystals. Large temperature dependence of the ratio cannot be explained by the three relaxation processes of highly excited states, i. e. internal conversion and vibrational relaxation, autoionization (preionization) and exciton fission. It is expected by analyzing the data that there must exist radiationless decay with an activation energy approximately 0. 048 ev in the relaxation manifolds. Predissociation to a geminate radical pair, which is followed by radiationless geminate recombination to an anthracene molecule or fission to isolated radicals, is considered as a competing process with the above three physical processes.

Original languageEnglish
Pages (from-to)1634-1641
Number of pages8
JournalJournal of the Physical Society of Japan
Volume54
Issue number4
Publication statusPublished - 1985 Apr

Fingerprint

anthracene
quenching
fission
crystals
temperature dependence
internal conversion
autoionization
molecular relaxation
rays
excitons
activation energy
photoluminescence
decay
excitation
molecules

ASJC Scopus subject areas

  • Physics and Astronomy(all)

Cite this

QUENCHING PROCESS OF RADIOLUMINESCENCE IN ANTHRACENE CRYSTALS. / Yokoi, Kohei; Ohba, Yujiro.

In: Journal of the Physical Society of Japan, Vol. 54, No. 4, 04.1985, p. 1634-1641.

Research output: Contribution to journalArticle

Yokoi, Kohei ; Ohba, Yujiro. / QUENCHING PROCESS OF RADIOLUMINESCENCE IN ANTHRACENE CRYSTALS. In: Journal of the Physical Society of Japan. 1985 ; Vol. 54, No. 4. pp. 1634-1641.
@article{1796c49b34224e8a932a04e9b373e3d3,
title = "QUENCHING PROCESS OF RADIOLUMINESCENCE IN ANTHRACENE CRYSTALS.",
abstract = "Temperature dependences of beta -ray-excited radioluminescence and uv-light-excited photoluminescence were measured in anthracene crystals. They depend on crystals, but their ratio shows the same characteristic in all of the crystals. Large temperature dependence of the ratio cannot be explained by the three relaxation processes of highly excited states, i. e. internal conversion and vibrational relaxation, autoionization (preionization) and exciton fission. It is expected by analyzing the data that there must exist radiationless decay with an activation energy approximately 0. 048 ev in the relaxation manifolds. Predissociation to a geminate radical pair, which is followed by radiationless geminate recombination to an anthracene molecule or fission to isolated radicals, is considered as a competing process with the above three physical processes.",
author = "Kohei Yokoi and Yujiro Ohba",
year = "1985",
month = "4",
language = "English",
volume = "54",
pages = "1634--1641",
journal = "Journal of the Physical Society of Japan",
issn = "0031-9015",
publisher = "Physical Society of Japan",
number = "4",

}

TY - JOUR

T1 - QUENCHING PROCESS OF RADIOLUMINESCENCE IN ANTHRACENE CRYSTALS.

AU - Yokoi, Kohei

AU - Ohba, Yujiro

PY - 1985/4

Y1 - 1985/4

N2 - Temperature dependences of beta -ray-excited radioluminescence and uv-light-excited photoluminescence were measured in anthracene crystals. They depend on crystals, but their ratio shows the same characteristic in all of the crystals. Large temperature dependence of the ratio cannot be explained by the three relaxation processes of highly excited states, i. e. internal conversion and vibrational relaxation, autoionization (preionization) and exciton fission. It is expected by analyzing the data that there must exist radiationless decay with an activation energy approximately 0. 048 ev in the relaxation manifolds. Predissociation to a geminate radical pair, which is followed by radiationless geminate recombination to an anthracene molecule or fission to isolated radicals, is considered as a competing process with the above three physical processes.

AB - Temperature dependences of beta -ray-excited radioluminescence and uv-light-excited photoluminescence were measured in anthracene crystals. They depend on crystals, but their ratio shows the same characteristic in all of the crystals. Large temperature dependence of the ratio cannot be explained by the three relaxation processes of highly excited states, i. e. internal conversion and vibrational relaxation, autoionization (preionization) and exciton fission. It is expected by analyzing the data that there must exist radiationless decay with an activation energy approximately 0. 048 ev in the relaxation manifolds. Predissociation to a geminate radical pair, which is followed by radiationless geminate recombination to an anthracene molecule or fission to isolated radicals, is considered as a competing process with the above three physical processes.

UR - http://www.scopus.com/inward/record.url?scp=0022046073&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=0022046073&partnerID=8YFLogxK

M3 - Article

AN - SCOPUS:0022046073

VL - 54

SP - 1634

EP - 1641

JO - Journal of the Physical Society of Japan

JF - Journal of the Physical Society of Japan

SN - 0031-9015

IS - 4

ER -