Collision broadening and shift of the potassium 4P-7S and 4P-5D lines by argon

Journal Article · Sun Mar 01 04:00:00 EST 1981 · Phys. Rev., A; (United States)

DOI:https://doi.org/10.1103/PhysRevA.23.1110· OSTI ID:6640304

Hohimer, J P

A two-step laser excitation technique has been used to investigate the collisional broadening and shift of excited-state potassium transitions. Values for the argon collisional broadening and shift constants for the potassium 4p-7s and 4p-5d transitions were determined from line shapes for argon pressures up to 100 Torr. The values of these constants (in units of 10/sup -9/ rad s/sup -1/ atom/sup -1/ cm/sup 3/) are (4P/sub 1/2/-7S/sub 1/2/): ..gamma..=11.60 +- 0.07, ..beta..=-6.68 +- 0.11; (4P/sub 3/2/-7S/sub 1/2/): ..gamma..=11.49 +- 0.15, ..beta..=-6.82 +- 0.14; (4P/sub 1/2/-5D/sub 3/2/): ..gamma..=8.64 +- 0.07, ..beta..=-4.62 +- 0.04; (4P/sub 3/2/-5D/sub 3/2/): ..gamma..=8.58 +- 0.10, ..beta..=-3.49 +- 0.32; (4P/sub 3/2/-5D/sub 5/2/): ..gamma..=9.13 +- 0.10, ..beta..=-4.73 +- 0.09. These broadening and shift constants are interpreted in terms of a Lennard-Jones interaction potential.

• Research Organization: Sandia National Laboratories, Albuquerque, New Mexico 87185
• OSTI ID: 6640304
• Journal Information: Phys. Rev., A; (United States), Journal Name: Phys. Rev., A; (United States) Vol. 23:3; ISSN PLRAA
• Country of Publication: United States
• Language: English

Related Subjects

640302* -- Atomic
Molecular & Chemical Physics-- Atomic & Molecular Properties & Theory
74 ATOMIC AND MOLECULAR PHYSICS
ABSORPTION SPECTRA
ALKALI METALS
ARGON
ATOM COLLISIONS
ATOM-ATOM COLLISIONS
COLLISIONS
ELEMENTS
ENERGY-LEVEL TRANSITIONS
EXCITATION
FLUIDS
GASES
LENNARD-JONES POTENTIAL
LINE BROADENING
METALS
NONMETALS
POTASSIUM
POTENTIALS
RARE GASES
SPECTRA