Radiation equilibria pertinent to planetary atmospheres

Abstract

Radiation equilibria due to ionizing radiation or ultraviolet light, or both, on systems such as air, oxygen, carbon dioxide, and their mixtures are of major importance to planetary atmospheres. To investigate the radiation equilibria in the ultraviolet region, a special "Bromine" lemp has been developed which gives 10'' quanta/sec at 1582 and 1633 A where the latter is the most intense Br line. Since the absorption coefficients of 0,, CO,, 0, and other gases are substantial at these wavelengths, radiation equilibria can be obtained in reasonable times (between 1 hr and a few days, depending on conditions) in our 500 ml sample volume. Since the temperature can also be varied, the conditions prevailing in any region of an atmosphere can be simulated. The wall effects are negligible for pressures down to a few mm.The irradiation of 0,, CO, CO,, N, and mixtures of these gases are discussed. The effects of trace amounts of water vapor on the equilibria are noted. PAABAqHOHHOE PABHOBECBE, IIPBCYIIJEE IIJIAHETAPHbIM ATMOCQEPAMTellus XVIII (1966), 2

Ultraviolet-gas phase and -photocatalytic synthesis from CO and NH3

“…Gas P h a s e R e a c t i o n s G e n e r a l P r o c e d u r e s An i o d i n e lamp w i t h a p r i n c i p a l e m i s s i o n at 206 nm (Harteck et al 1964) or a low p r e s s u r e m e r c u r y lamp w i t h p r i n c i p a l e m i s s i o n s at 253.7 nm and 184.9 nm was used. Gases w e r e t r a n sf e r r e d in a v a c u u m line w h i c h u s e d o n l y m e c h a n i c a l g a u g e s so as to a v o i d m e r c u r y s e n s i t i z e d r e a c t i o n s .…”