Reactions of High‐Energy, Excited I128 Ions with Gaseous Molecules

The manner in which molecular additives inhibit the reaction of (n, γ) activated I128 with CH4 was determined in an effort to observe indirectly reactions of I128 with the additives. The data suggest that (1) O2, N2, and CF4 serve only to remove excess I128 kinetic energy; (2) the ionization potential of O2 is greater than 12.16 ev, the potential energy of I+(1D2); (3) the ionization potential of C2F6 is less than 12.16 ev; (4) CH3I, CF3I, n‐C3H7I, and C6H6 inhibit the reaction principally as a result of I++additive ion‐molecule reactions and/or physical quenching.Peer Reviewedhttp://deepblue.lib.umich.edu/bitstream/2027.42/70530/2/JCPSA6-36-2-287-1.pd

Gaseous Reactions of Methane and Various Polyhalomethanes with Bromine and Iodine Activated by the (n, gamma) Process

United States Atomic Energy Commissionhttp://deepblue.lib.umich.edu/bitstream/2027.42/93619/1/mmpp002.pd

Effect of Inert‐Gas Moderators on the (n, γ) Activated Reaction of I128 with CH4

In the presence of a large excess of gaseous methane, 54.4±0.5% of I128 formed by (n, γ) activation was found to become stabilized in organic combination. The effects of inert‐gas additives in moderating the reaction of I128 with CH4 were determined in an effort to ascertain the mechanism. The data, extrapolated to zero mole‐fraction methane, indicate that xenon is capable of reducing the organic I128 to 11% whereas neon, argon, and krypton each reduce it to only about 36%. These data suggest that of the 54.4% organic I128, about 18.4% forms as a result of hot I128 reactions, 11% as a result of excited iodine atoms or I+ ions in the 3P2, 3P1, and/or 3P0 states, and 25% as a result of reactions of I+(1D2) ions.Peer Reviewedhttp://deepblue.lib.umich.edu/bitstream/2027.42/69481/2/JCPSA6-34-6-1855-1.pd

New Standard Reference Materials New Standard Reference Data Conference Reports Wal Issue: Biomedical Sampling

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