INVESTIGADORES

PINO Gustavo Ariel

artículos

Título:

Collisional relaxation of highly vibrationally excited CF2O prepared with different initial energies and distribution functions

Autor/es:

G. A. PINO; C. A. RINALDI; E. A. CORONADO; J. C. FERRERO

Revista:

JOURNAL OF CHEMICAL PHYSICS

Editorial:

AMER INST PHYSICS

Referencias:

Año: 1999 vol. 110 p. 1942 - 1948

ISSN:

0021-9606

Resumen:

The collisional relaxation of highly vibrationally excited CF2O* molecules prepared by infrared
laser multiphoton absorption is compared with the results obtained when CF2O* is generated as a
product of the reactions of CF3 and CF2Cl radicals with NO2. The three methods produce molecules
with probably different energy distributions and also different average excitation energies ^E&. Thus,
IR laser excitation results in a bimodal distribution, with average excitation energies in the range
3 00020 000 cm21, while the chemical reactions of CF3 and CF2Cl radicals produce CF2O* with
a undetermined level of vibrational excitation that depends on the specific energy change of the
process. Irrespective of the method of preparation, the same exponential decays are obtained for the
each of various colliders studied ~Ar, N2, NO2, and CF2O). It is shown that under these conditions,
the observed bulk average energy transferred per collision, ^^DE&&, is equal to the microscopic
value ^DE&. However, a single exponential energy decay is not sufficient condition to assure that
equality.2O* molecules prepared by infrared
laser multiphoton absorption is compared with the results obtained when CF2O* is generated as a
product of the reactions of CF3 and CF2Cl radicals with NO2. The three methods produce molecules
with probably different energy distributions and also different average excitation energies ^E&. Thus,
IR laser excitation results in a bimodal distribution, with average excitation energies in the range
3 00020 000 cm21, while the chemical reactions of CF3 and CF2Cl radicals produce CF2O* with
a undetermined level of vibrational excitation that depends on the specific energy change of the
process. Irrespective of the method of preparation, the same exponential decays are obtained for the
each of various colliders studied ~Ar, N2, NO2, and CF2O). It is shown that under these conditions,
the observed bulk average energy transferred per collision, ^^DE&&, is equal to the microscopic
value ^DE&. However, a single exponential energy decay is not sufficient condition to assure that
equality.2O* is generated as a
product of the reactions of CF3 and CF2Cl radicals with NO2. The three methods produce molecules
with probably different energy distributions and also different average excitation energies ^E&. Thus,
IR laser excitation results in a bimodal distribution, with average excitation energies in the range
3 00020 000 cm21, while the chemical reactions of CF3 and CF2Cl radicals produce CF2O* with
a undetermined level of vibrational excitation that depends on the specific energy change of the
process. Irrespective of the method of preparation, the same exponential decays are obtained for the
each of various colliders studied ~Ar, N2, NO2, and CF2O). It is shown that under these conditions,
the observed bulk average energy transferred per collision, ^^DE&&, is equal to the microscopic
value ^DE&. However, a single exponential energy decay is not sufficient condition to assure that
equality.3 and CF2Cl radicals with NO2. The three methods produce molecules
with probably different energy distributions and also different average excitation energies ^E&. Thus,
IR laser excitation results in a bimodal distribution, with average excitation energies in the range
3 00020 000 cm21, while the chemical reactions of CF3 and CF2Cl radicals produce CF2O* with
a undetermined level of vibrational excitation that depends on the specific energy change of the
process. Irrespective of the method of preparation, the same exponential decays are obtained for the
each of various colliders studied ~Ar, N2, NO2, and CF2O). It is shown that under these conditions,
the observed bulk average energy transferred per collision, ^^DE&&, is equal to the microscopic
value ^DE&. However, a single exponential energy decay is not sufficient condition to assure that
equality.^E&. Thus,
IR laser excitation results in a bimodal distribution, with average excitation energies in the range
3 00020 000 cm21, while the chemical reactions of CF3 and CF2Cl radicals produce CF2O* with
a undetermined level of vibrational excitation that depends on the specific energy change of the
process. Irrespective of the method of preparation, the same exponential decays are obtained for the
each of various colliders studied ~Ar, N2, NO2, and CF2O). It is shown that under these conditions,
the observed bulk average energy transferred per collision, ^^DE&&, is equal to the microscopic
value ^DE&. However, a single exponential energy decay is not sufficient condition to assure that
equality.21, while the chemical reactions of CF3 and CF2Cl radicals produce CF2O* with
a undetermined level of vibrational excitation that depends on the specific energy change of the
process. Irrespective of the method of preparation, the same exponential decays are obtained for the
each of various colliders studied ~Ar, N2, NO2, and CF2O). It is shown that under these conditions,
the observed bulk average energy transferred per collision, ^^DE&&, is equal to the microscopic
value ^DE&. However, a single exponential energy decay is not sufficient condition to assure that
equality.~Ar, N2, NO2, and CF2O). It is shown that under these conditions,
the observed bulk average energy transferred per collision, ^^DE&&, is equal to the microscopic
value ^DE&. However, a single exponential energy decay is not sufficient condition to assure that
equality.^^DE&&, is equal to the microscopic
value ^DE&. However, a single exponential energy decay is not sufficient condition to assure that
equality.^DE&. However, a single exponential energy decay is not sufficient condition to assure that
equality.