Photon-induced reorientation of M-centers in potassium chloride

T.J. Turner; René De Batist; Y. Haven

Photon-induced reorientation of M-centers in potassium chloride

T.J. Turner, René De Batist, Y. Haven

Research output › peer-review

Abstract

The reorientation of M-centers in additively colored KCl crystals, due to the absorption of polarized F-light is studied experimentally. The time dependence of the resulting dichroism can be described by either one, or two relaxation times, depending upon the geometry. This agrees with the theoretical predictions of a previous paper [21]. From the values of the relaxation times obtained at 200 °K, it is concluded that absorption of M_F [001] photons indices a rotation of the M-center with a quantum efficiency which is approximately three times as large as that associated with absorption of M_F [011] photons. The temperature dependence of the quantum efficiency for the process can be described by an activation energy of a few hundredths of an eV.

Original language	English
Publisher	SCK CEN
Number of pages	21
State	Published - Jul 1965

Publication series

Name	SCK CEN Reports
Publisher	SCK CEN
No.	BLG-381

Cite this

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abstract = "The reorientation of M-centers in additively colored KCl crystals, due to the absorption of polarized F-light is studied experimentally. The time dependence of the resulting dichroism can be described by either one, or two relaxation times, depending upon the geometry. This agrees with the theoretical predictions of a previous paper [21]. From the values of the relaxation times obtained at 200 °K, it is concluded that absorption of MF [001] photons indices a rotation of the M-center with a quantum efficiency which is approximately three times as large as that associated with absorption of MF [011] photons. The temperature dependence of the quantum efficiency for the process can be described by an activation energy of a few hundredths of an eV.",

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AU - Turner, T.J.

AU - De Batist, René

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N2 - The reorientation of M-centers in additively colored KCl crystals, due to the absorption of polarized F-light is studied experimentally. The time dependence of the resulting dichroism can be described by either one, or two relaxation times, depending upon the geometry. This agrees with the theoretical predictions of a previous paper [21]. From the values of the relaxation times obtained at 200 °K, it is concluded that absorption of MF [001] photons indices a rotation of the M-center with a quantum efficiency which is approximately three times as large as that associated with absorption of MF [011] photons. The temperature dependence of the quantum efficiency for the process can be described by an activation energy of a few hundredths of an eV.

AB - The reorientation of M-centers in additively colored KCl crystals, due to the absorption of polarized F-light is studied experimentally. The time dependence of the resulting dichroism can be described by either one, or two relaxation times, depending upon the geometry. This agrees with the theoretical predictions of a previous paper [21]. From the values of the relaxation times obtained at 200 °K, it is concluded that absorption of MF [001] photons indices a rotation of the M-center with a quantum efficiency which is approximately three times as large as that associated with absorption of MF [011] photons. The temperature dependence of the quantum efficiency for the process can be described by an activation energy of a few hundredths of an eV.

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