Relaxation of photon echoes in weakly ionized noble-gas plasmas
Journal Article
·
· Phys. Rev., A; (United States)
Photon echoes generated from visible transitions in the noble gases helium, neon, and argon are observed and the collisional relaxation rates are measured. The photon echoes are excited on transitions initiating from metastable states which are populated by electron impact in an rf discharge. The photon-echo intensity is measured as a function of time after the discharge is turned off and as a function of gas pressure. The reduction of the echo intensity in these two experiments is attributed to relaxation of the metastable population in the afterglow and dephasing collisions, respectively. The dependence of the photon-echo damping time on transition wavelength and perturber gas is interpreted by means of a simple van der Waals model for the excited-atom and perturber-gas interaction.
- Research Organization:
- Department of Physics, University of Chicago, Chicago, Illinois 60637
- OSTI ID:
- 5857149
- Journal Information:
- Phys. Rev., A; (United States), Journal Name: Phys. Rev., A; (United States) Vol. 20:6; ISSN PLRAA
- Country of Publication:
- United States
- Language:
- English
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Journal Article
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Thesis/Dissertation
·
Wed Dec 31 23:00:00 EST 1980
·
OSTI ID:5303729
Stimulated photon echo for angular analysis of elastic and depolarizing Yb/sup /--noble-gas collisions
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·
OSTI ID:5430813
Related Subjects
640420* -- Fluid Physics-- Properties & Structure of Fluids-- (-1987)
75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
AFTERGLOW
ARGON
ATOM COLLISIONS
COLLISIONS
CRYOGENIC FLUIDS
ELECTRIC DISCHARGES
ELECTRON COLLISIONS
ELECTRON-ATOM COLLISIONS
ELEMENTS
ENERGY LEVELS
ENERGY-LEVEL TRANSITIONS
EXCITED STATES
FLUIDS
GASES
HELIUM
IONIZED GASES
METASTABLE STATES
NEON
NONMETALS
RARE GASES
RELAXATION
VAN DER WAALS FORCES
WEAKLY IONIZED GASES
75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
AFTERGLOW
ARGON
ATOM COLLISIONS
COLLISIONS
CRYOGENIC FLUIDS
ELECTRIC DISCHARGES
ELECTRON COLLISIONS
ELECTRON-ATOM COLLISIONS
ELEMENTS
ENERGY LEVELS
ENERGY-LEVEL TRANSITIONS
EXCITED STATES
FLUIDS
GASES
HELIUM
IONIZED GASES
METASTABLE STATES
NEON
NONMETALS
RARE GASES
RELAXATION
VAN DER WAALS FORCES
WEAKLY IONIZED GASES