Metastable Nitric Acid Hydrates – PSC Constituents
نویسنده
چکیده
Nitric acid hydrates are important constituents of solid PSC and Cirrus cloud particles. Due to the phase diagram only hexagonal ice and nitric acid trihydrate have a reasonable thermodynamic stability and are commonly observed in the stratosphere. Besides, also a number of metastable modifications might exist: α-NAD, β-NAD, α-NAT, NAP and cubic ice. The existence of these metastable compounds remains uncertain and has not been proofed yet.
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