Low temperature - irradiation effect on KC1:Eu(2+) crystals

H. Opyrchł; K. D. Nierzewski; B. Macalik

doi:10.1016/0038-1098(89)90196-8

Low temperature - irradiation effect on KC1:Eu(2+) crystals

H. Opyrchł, K. D. Nierzewski, B. Macalik

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Abstract

The formation of color centers at LNT (measured after warming to RT) in {A figure is presented} - irradiated KC1 crystals doped with Eu(2+) ions in a wide concentration range is studied by optical absorption, emission and the ITC method. No effect of post-irradiation warming up to RT on Eu(2+)-dipole concentration is observed. The ITC measurements reveal the drastic decrease of concentration of isolated europium dipoles induced by LNT irradiation. Moreover, the relationship between F center and Eu(2+) dipoles is different than that predicted by the theory {divides}8{divides}. The results obtained are explained by radiation induced aggregation of Eu(2+) dipoles into small clusters at LNT.

Original language	English (US)
Pages (from-to)	783-787
Number of pages	5
Journal	Solid State Communications
Volume	71
Issue number	10
DOIs	https://doi.org/10.1016/0038-1098(89)90196-8
State	Published - Sep 1989
Externally published	Yes

All Science Journal Classification (ASJC) codes

General Chemistry
Condensed Matter Physics
Materials Chemistry

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10.1016/0038-1098(89)90196-8

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title = "Low temperature - irradiation effect on KC1:Eu(2+) crystals",

abstract = "The formation of color centers at LNT (measured after warming to RT) in {A figure is presented} - irradiated KC1 crystals doped with Eu(2+) ions in a wide concentration range is studied by optical absorption, emission and the ITC method. No effect of post-irradiation warming up to RT on Eu(2+)-dipole concentration is observed. The ITC measurements reveal the drastic decrease of concentration of isolated europium dipoles induced by LNT irradiation. Moreover, the relationship between F center and Eu(2+) dipoles is different than that predicted by the theory {divides}8{divides}. The results obtained are explained by radiation induced aggregation of Eu(2+) dipoles into small clusters at LNT.",

author = "H. Opyrch{\l} and Nierzewski, {K. D.} and B. Macalik",

year = "1989",

month = sep,

doi = "10.1016/0038-1098(89)90196-8",

language = "English (US)",

volume = "71",

pages = "783--787",

journal = "Solid State Communications",

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TY - JOUR

T1 - Low temperature - irradiation effect on KC1:Eu(2+) crystals

AU - Opyrchł, H.

AU - Nierzewski, K. D.

AU - Macalik, B.

PY - 1989/9

Y1 - 1989/9

N2 - The formation of color centers at LNT (measured after warming to RT) in {A figure is presented} - irradiated KC1 crystals doped with Eu(2+) ions in a wide concentration range is studied by optical absorption, emission and the ITC method. No effect of post-irradiation warming up to RT on Eu(2+)-dipole concentration is observed. The ITC measurements reveal the drastic decrease of concentration of isolated europium dipoles induced by LNT irradiation. Moreover, the relationship between F center and Eu(2+) dipoles is different than that predicted by the theory {divides}8{divides}. The results obtained are explained by radiation induced aggregation of Eu(2+) dipoles into small clusters at LNT.

AB - The formation of color centers at LNT (measured after warming to RT) in {A figure is presented} - irradiated KC1 crystals doped with Eu(2+) ions in a wide concentration range is studied by optical absorption, emission and the ITC method. No effect of post-irradiation warming up to RT on Eu(2+)-dipole concentration is observed. The ITC measurements reveal the drastic decrease of concentration of isolated europium dipoles induced by LNT irradiation. Moreover, the relationship between F center and Eu(2+) dipoles is different than that predicted by the theory {divides}8{divides}. The results obtained are explained by radiation induced aggregation of Eu(2+) dipoles into small clusters at LNT.

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U2 - 10.1016/0038-1098(89)90196-8

DO - 10.1016/0038-1098(89)90196-8

M3 - Article

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SN - 0038-1098

VL - 71

SP - 783

EP - 787

JO - Solid State Communications

JF - Solid State Communications

IS - 10

ER -

Low temperature - irradiation effect on KC1:Eu(2+) crystals

Abstract

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