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No evidence for Evans’ holes in the A, B, C vibrational structure of potassium dihydrogen arsenate
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Image of FIG. 1.
FIG. 1.

The ideal shapes of the theoretical -profile curves according to Eq. (2) one-quantum transitions, (0-1) in black; Eqs. (4) and (5) two-quantum transitions, (0-2) in red, in green; and three-quantum transitions, (0-3) in dark blue, (0-2)(0-1) in light blue, in mauve. Here and .

Image of FIG. 2.
FIG. 2.

The theoretical -profile curve of the two-quantum transition, (0-2), of Fig. 1, now in red, compared to a vertically scaled three-quantum transition (0-3), .

Image of FIG. 3.
FIG. 3.

The map of at 5 K, obtained on MARI, with an incident energy of .

Image of FIG. 4.
FIG. 4.

The spectra of . The upper trace, as derived from the data of Fig. 3 by summing across . The lower trace, as obtained from the TOSCA spectrometer, 20 K.

Image of FIG. 5.
FIG. 5.

-profiles of the ridge intensity at , in green; , in black; , in red; , in blue. Also shown, black line, is the -profile of the band.

Image of FIG. 6.
FIG. 6.

-profiles of the transitions at (a) ; (b) [fitted to Eq. (10), red line]; (c) [corrected intensity with best fitting two-quantum curve, Eq. (5)]; (d) [uncorrected intensity, black line; corrected intensity, data points; best fitting two-quantum curve, red line, Eq. (4)]. See text.


Generic image for table
Table I.

The fitting parameters obtained from fitting Eqs. (9) and (10) to the spectral features of . The underlying intensity of the ridge has been subtracted, see text.

Generic image for table
Table II.

Showing the band positions, , in potassium dihydrogen arsenate; as observed in the infrared, Raman, and INS techniques.


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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: No evidence for Evans’ holes in the A, B, C vibrational structure of potassium dihydrogen arsenate