title: Probing the lifetimes of internally excited amyl nitrite cations.
abstract: The photoelectron spectrum shows that multiphoton ionization of amyl nitrite, C(5)H(11)ONO, using ultrafast laser pulses deposits up to 3.7 eV of energy into internal degrees of freedom. As a result, the molecules fragment to produce various daughter ions of masses 87, 71, 60, 57, 41, 30, 29, and 27. Absorption of an additional photon with 3 eV of energy by the ions yields transients with picosecond decay times, revealing the time scale of the decomposition dynamics of the initially prepared parent ion. Each mass peak has a distinct time constant, in the range of 1.2 to 7.9 ps, emphasizing the dependence of the fragmentation mechanism on the ion internal energy.
authors.affiliation: Department of Chemistry, University of Copenhagen, Universitetsparken 5, DK-2100 Copenhagen.
authors.forename: Martin
authors.initials: M
authors.lastname: Rosenberg
authors.forename: Michael P
authors.initials: MP
authors.lastname: Minitti
authors.forename: Nerijus
authors.initials: N
authors.lastname: Rusteika
authors.forename: Christer Z
authors.initials: CZ
authors.lastname: Bisgaard
authors.forename: Sanghamitra
authors.initials: S
authors.lastname: Deb
authors.forename: Peter M
authors.initials: PM
authors.lastname: Weber
authors.forename: Theis I
authors.initials: TI
authors.lastname: Sølling