title: Two photoionization thresholds of N3 produced by ClN3 photodissociation at 248 nm: further evidence for cyclic N3.
abstract: We present results of near-threshold photoionization of N3 photofragments produced by laser photodissociation of ClN3 at 248 nm. The time of flight of recoiling N3 is used to resolve two photochemical channels producing N3, which exhibit different translational energy release. The two forms of N3 resolved in this way exhibit different photoionization thresholds, consistent with their assignment to linear (X 2pi(g)) and cyclic N3. This result agrees with the existing theoretical calculations of excited and ionic states of N3 and strengthens previous experimental results which suggested that the ClN3 photolysis produces a cyclic form of N3.
authors.affiliation: Department of Chemistry and Biochemistry, University of California Santa Barbara, Santa Barbara, California 93106, USA. sama@chem.ucsb.edu
authors.forename: Peter C
authors.initials: PC
authors.lastname: Samartzis
authors.forename: Jim Jr-Min
authors.initials: JJ
authors.lastname: Lin
authors.forename: Tao-Tsung
authors.initials: TT
authors.lastname: Ching
authors.forename: Chanchal
authors.initials: C
authors.lastname: Chaudhuri
authors.forename: Yuan T
authors.initials: YT
authors.lastname: Lee
authors.forename: Shih-Huang
authors.initials: SH
authors.lastname: Lee
authors.forename: Alec M
authors.initials: AM
authors.lastname: Wodtke
mesh_terms: D000465:Algorithms; D002627:Chemistry, Physical / Q000379:methods*; D003198:Computer Simulation; D006801:Humans; D007477:Ions; D007834:Lasers; D008027:Light; D008956:Models, Chemical; D009584:Nitrogen / Q000737:chemistry*; D010777:Photochemistry / Q000379:methods*; D010782:Photolysis; D017785:Photons; D013057:Spectrum Analysis / Q000379:methods*
chemical_list: D007477:Ions; D009584:Nitrogen