Temperature dependence of the 1555 cm−1 infrared absorption band in liquid D2O: inflection points

1970 ◽  
Vol 48 (24) ◽  
pp. 3790-3796 ◽  
Author(s):  
R. Oder ◽  
D. A. I. Goring
Keyword(s):  
Absorption Band ◽  
Temperature Dependence ◽  
Temperature Interval ◽  
Infrared Absorption ◽  
Structural Changes ◽  
Peak Height ◽  
Half Width ◽  
Combination Band ◽  
Infrared Absorption Band ◽  
Inflection Points

The temperature dependence curves of the peak height, frequency, and half-width of the infrared intermolecular combination band absorbing at 1555 cm−1 in liquid D2O has been observed to behave sigmoidally between 5 and 70 °C. No evidence of sharp discontinuities has been obtained but inflection points in the rather broad temperature interval of about 25 to 40 °C have been observed. Results are discussed in terms of structural changes occurring in the liquid.

Pressure Narrowing of the Rotational Lines of the Fundamental Infrared Band of H2 in Collision-Induced Absorption

1971 ◽  
Vol 49 (3) ◽  
pp. 381-384 ◽  
Author(s):  
J. De Remigis ◽  
J. W. Mactaggart ◽  
H. L. Welsh
Keyword(s):  
Absorption Band ◽  
Infrared Absorption ◽  
Half Width ◽  
Density Range ◽  
Infrared Band ◽  
Induced Absorption ◽  
Infrared Absorption Band

The enhancement by argon of the pressure-induced fundamental infrared absorption band of hydrogen is studied for Ar densities in the range 8–820 amagat at 152 K. The half-width, Δv1/2, of the quadrupole-induced S1(1) transition remains constant at 55 cm−1 up to ~300 amagat and then decreases to 25 cm−1 at the highest density. In the higher density range Δv1/2 varies inversely as the density. The S1(1) line of H2 in liquid H2–Ar solutions shows a similar pressure narrowing for Ar densities in the range 640–833 amagat at 115 K.

An infrared absorption band caused by H+-implantation in LiNbO3 crystals

Vacuum ◽  
1991 ◽  
Vol 42 (16) ◽  
pp. 1089
Author(s):  
Feng Xiqi ◽  
Zhang Jizhou ◽  
Shao Tianhao
Keyword(s):  
Absorption Band ◽  
Infrared Absorption ◽  
Infrared Absorption Band

566. An infrared absorption band of the N-methyl group in the region of 2800 cm.–1

1958 ◽  
Vol 0 (0) ◽  
pp. 2780-2783 ◽  
Author(s):  
John T. Braunholtz ◽  
E. A. V. Ebsworth ◽  
Frederick G. Mann ◽  
N. Sheppard
Keyword(s):  
Absorption Band ◽  
Infrared Absorption ◽  
Methyl Group ◽  
Infrared Absorption Band

Infrared Absorption Band Forms of Molten Alkali‐Metal Nitrates

1969 ◽  
Vol 50 (4) ◽  
pp. 1901-1902 ◽  
Author(s):  
R. Bonn ◽  
G. H. Wegdam ◽  
J. van der Elsken
Keyword(s):  
Absorption Band ◽  
Alkali Metal ◽  
Infrared Absorption ◽  
Infrared Absorption Band ◽  
Metal Nitrates
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