Intensities of the <span class="aps-inline-formula"><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><mrow><msub><mrow><mi>R</mi></mrow><mrow><mn>1</mn></mrow></msub></mrow></math></span> and <span class="aps-inline-formula"><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><mrow><msub><mrow><mi>R</mi></mrow><mrow><mn>2</mn></mrow></msub></mrow></math></span> Bands in KCl Crystals

Robert Herman; M. C. Wallis; R. F. Wallis

doi:10.1103/PhysRev.103.87

Access by Xinjiang University

Intensities of the $R_{1}$ and $R_{2}$ Bands in KCl Crystals

Robert Herman^*

M. C. Wallis^† and R. F. Wallis^‡

Department of Physics, University of Maryland, College Park, Maryland

Applied Physics Laboratory, The Johns Hopkins University, Silver Spring, Maryland

^*Visiting Professor, on leave from Applied Physics Laboratory, The Johns Hopkins University.
^†Present address: 4823 4th Avenue, Washington 21, D. C.
^‡Present address: United States Naval Research Laboratory, Washington 25, D. C.

PDF

Phys. Rev. 103, 87 – Published 1 July, 1956

DOI: https://doi.org/10.1103/PhysRev.103.87

Abstract

Measurements have been made of the intensities of the $R_{1}$ , $R_{2}$ , $M$ , and $N$ bands in KCl crystals as functions of $F$ light irradiation time. Both x-rayed and additively colored crystals were used. The x-raying and $F$ light irradiation were done at room temperature. The optical absorption measurements were made at liquid nitrogen temperature to improve the resolution of the bands. In both the x-rayed and additively colored samples the ratio of the $R_{2}$ and $R_{1}$ band intensities varied by less than a factor 1.5 when the individual intensities varied by a factor 6 or greater. No other pair of bands studied showed such a small variation in their intensity ratio.

Theoretical frequencies and oscillator strengths were obtained for the $1 s σ - 2 p σ$ and $1 s σ - 2 p π$ transitions of $H_{2}^{+}$ immersed in a dielectric medium and for the $1 s - 2 p$ transition of the hydrogen atom immersed in a dielectric medium. Frequencies were also obtained for the ${}^{1}Σ_{g}^{+} - {}^{1}Π_{u}$ and ${}^{1}Σ_{g}^{+} - {}^{1}Σ_{u}^{+}$ transitions of $H_{2}$ immersed in a dielectric medium. For KCl the computed frequencies of the last three transitions named have approximately the same magnitude and fall in the same order as the observed $F$ , $R_{1}$ , and $R_{2}$ bands, respectively. It appears possible that the observed $R_{1}$ and $R_{2}$ bands may arise from two transitions of the system of two electrons trapped at a pair of adjacent negative ion vacancies.

References (21)

J. P. Molnar, thesis, Massachusetts Institute of Technology, 1940 (unpublished)
S. Petroff, Z. Physik 127, 443 (1950)
J. J. Oberly and E. Burstein, Phys. Rev. 79, 217 (1950)
J. J. Oberly, Phys. Rev. 84, 1257 (1951)
Casler, Pringsheim, and Yuster, J. Chem. Phys. 18, 1564 (1950)
R. V. Hesketh, thesis, University of Durham, Durham, England, 1953 (unpublished)
F. Seitz, Revs. Modern Phys. 18, 384 (1946)
F. Seitz, Revs. Modern Phys. 26, 7 (1954)
T. Nagamiya and N. Tatsuuma, J. Phys. Soc. Japan 9, 307 (1954)
Tagamiya, Kojima, and Kondoh, J. Phys. Soc. Japan 9, 310 (1954)
W. H. Duerig and I. L. Mador, Rev. Sci. Instr. 23, 421 (1952)
H. Pick, Ann. Physik 31, 365 (1938)
Omitted endnote
Omitted endnote
Omitted endnote
Bates, Ledsham, and Stewart, Trans. Roy. Soc. (London) A246, 215 (1953)
R. S. Mulliken, Revs. Modern Phys. 4, 1 (1932)
M. Lax, in 1954 Photoconductivity Conference (John Wiley and Sons, Inc., New York, 1956)
D. R. Bates, J. Chem. Phys. 19, 1122 (1951)
Bates, Darling, Hawe, and Stewart, Proc. Phys. Soc. (London) A66, 1124 (1953)
[18], p. 9

[c1] J. P. Molnar, thesis, Massachusetts Institute of Technology, 1940 (unpublished)

[c2] S. Petroff, Z. Physik 127, 443 (1950)

[c3] J. J. Oberly and E. Burstein, Phys. Rev. 79, 217 (1950)

[c4] J. J. Oberly, Phys. Rev. 84, 1257 (1951)

[c5] Casler, Pringsheim, and Yuster, J. Chem. Phys. 18, 1564 (1950)

[c6] R. V. Hesketh, thesis, University of Durham, Durham, England, 1953 (unpublished)

[c7] F. Seitz, Revs. Modern Phys. 18, 384 (1946)

[c8] F. Seitz, Revs. Modern Phys. 26, 7 (1954)

[c9] T. Nagamiya and N. Tatsuuma, J. Phys. Soc. Japan 9, 307 (1954)

[c10] Tagamiya, Kojima, and Kondoh, J. Phys. Soc. Japan 9, 310 (1954)

[c11] W. H. Duerig and I. L. Mador, Rev. Sci. Instr. 23, 421 (1952)

[c12] H. Pick, Ann. Physik 31, 365 (1938)

[c13] Omitted endnote

[c14] Omitted endnote

[c15] Omitted endnote

[c16] Bates, Ledsham, and Stewart, Trans. Roy. Soc. (London) A246, 215 (1953)

[c17] R. S. Mulliken, Revs. Modern Phys. 4, 1 (1932)

[c18] M. Lax, in 1954 Photoconductivity Conference (John Wiley and Sons, Inc., New York, 1956)

[c19] D. R. Bates, J. Chem. Phys. 19, 1122 (1951)

[c20] Bates, Darling, Hawe, and Stewart, Proc. Phys. Soc. (London) A66, 1124 (1953)

[c21] [18], p. 9

Physical Review Journals Archive

Export citation

Export citation

Intensities of the $R_{1}$ and $R_{2}$ Bands in KCl Crystals

Abstract

References (21)

Outline

Information

Filter

Filter

Article Lookup

Enter a citation

Intensities of the R1 and R2 Bands in KCl Crystals

Abstract

References (21)

Intensities of the $R_{1}$ and $R_{2}$ Bands in KCl Crystals