Inversion of the OH 1720-MHz line
Journal Article
·
· Astrophys. J., v. 203, no. 1, pp. 124-131
It is shown that the OH 1720-MHz line can be strongly inverted by collisions which excite the rotation states, preferentially the $sup 2$$pi$$sub 3$$/$$sub 2$ ladder. It is also argued that radiative pumps (of any wavelength) can strongly invert only the 1612-MHz line. Inversion of the 1720-MHz line with vertical-bartauvertical-barapproximately-less-than1 can be achieved by either collisional or radiative pumps at low OH densities (n/sub OH/10$sup -3$-10$sup - 4$ cm$sup -3$). (AIP)
- Research Organization:
- Department of Nuclear Physics, Weizmann Institute of Science, Rehovot, Israel
- Sponsoring Organization:
- USDOE
- NSA Number:
- NSA-33-030786
- OSTI ID:
- 4027550
- Journal Information:
- Astrophys. J., v. 203, no. 1, pp. 124-131, Journal Name: Astrophys. J., v. 203, no. 1, pp. 124-131; ISSN ASJOA
- Country of Publication:
- United States
- Language:
- English
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