A sudden-freeze model for the extraction of effective rotational relaxation cross sections from nozzle beam expansions is refined by introducing a temperature-dependent cross section u,~( T). Since (i) u,,ccexp( -A&), (ii) the rotational energy level spacing AE,ccJand (iii) J\*ccT"\*itisassumedthatu
Picosend molecular relaxation displayed with crossed laser beams.
β Scribed by M.M. Malley; P.M. Rentzepis
- Publisher
- Elsevier Science
- Year
- 1969
- Tongue
- English
- Weight
- 254 KB
- Volume
- 3
- Category
- Article
- ISSN
- 0009-2614
No coin nor oath required. For personal study only.
β¦ Synopsis
We have measured directly, with one laser shot, the picosecond relaxation times of Kodak Q-switch Loolymethlne) dyes at 1.06~ using crossed laser beams. This technique offers a simple efft~ctive methr~d of measuring relaxation lifetimes of both fluorescent and non-fluorescent species.
π SIMILAR VOLUMES
Direct measurements of scattering cross sections for NHs in well-defined quantum states are made using a molcrular beam maser spectrometer. Cross sections are compared for a pure inversion state with those for a coherent superposition state for scattering gases He, Ar, Nz, N20, NHa, CFgH and CHaCN.T
Double-resonance effects have been observed in a pulsed molecular beam Fourier transform microwave spectrometer with signal frequencies between 8 and 12 GHz and pump frequencies between 12 and 25 GHz. For applying the pump power a second Fabry-Perot cavity was installed perpendicularly to the main F