title: The effect of the argon carrier gas in the multiphoton dissociation-ionization of tetracene.
abstract: The multiphoton dissociation-ionization of tetracene at 355 nm using 6.5 nanosecond laser pulses, with and without argon as a carrier gas (CG), has been studied and compared. Ion fragments were analyzed in a time-of-flight mass spectrometer and separated according to their mass-to-charge ratio (m/z). The results show that the dynamic of photodissociation at approximately 10(10) W cm(-2) intensities is strongly influenced by the CG. The suppression of fragmentation channels primarily those relating to the formation of the CH(m) (+) (m = 2, 4), C(2)H(4) (+) and C(5)H(4) (+2) ions. CH(5) (+) and CH(6) (+) were observed which have not been reported before in photodissociation tetracene experiments.
authors.affiliation: Laboratorio de Colisiones Atómicas Moleculares, Instituto de Ciencias Físicas, Universidad Nacional Autónoma de México, Av. Universidad Colonia Chamilpa, Cuernavaca, Morelos C.P. 62210, México.
authors.forename: Juan Carlos
authors.initials: JC
authors.lastname: Poveda
authors.affiliation: Laboratorio de Colisiones Atómicas Moleculares, Instituto de Ciencias Físicas, Universidad Nacional Autónoma de México, Av. Universidad Colonia Chamilpa, Cuernavaca, Morelos C.P. 62210, México.
authors.forename: Alejandro
authors.initials: A
authors.lastname: San Román
authors.affiliation: Laboratorio de Colisiones Atómicas Moleculares, Instituto de Ciencias Físicas, Universidad Nacional Autónoma de México, Av. Universidad Colonia Chamilpa, Cuernavaca, Morelos C.P. 62210, México.
authors.forename: Alfonso
authors.initials: A
authors.lastname: Guerrero
authors.affiliation: Laboratorio de Colisiones Atómicas Moleculares, Instituto de Ciencias Físicas, Universidad Nacional Autónoma de México, Av. Universidad Colonia Chamilpa, Cuernavaca, Morelos C.P. 62210, México.
authors.forename: Ignacio
authors.initials: I
authors.lastname: Álvarez
authors.affiliation: Laboratorio de Colisiones Atómicas Moleculares, Instituto de Ciencias Físicas, Universidad Nacional Autónoma de México, Av. Universidad Colonia Chamilpa, Cuernavaca, Morelos C.P. 62210, México.
authors.forename: Carmen
authors.initials: C
authors.lastname: Cisneros