Atomic data from the IRON Project. XXX. Collision data for the (2) P^o_{1\over 2} - ^2P(o_{3/) 2} fine-structure lines of P iii, S IV and CL V
Abstract
This is the third paper in a series giving collision rates for electron excitation of the (2) P^o_{1\over 2} - ^2P(o_{3/) 2} ground state fine-structure transition in aluminium-like ions. In this paper we give data for the transitions in P iii (17.9 mu m), S iv ( 10.5 mu m) and Cl v (6.71 mu m). For the P and Cl ions the only existing results are nearly 30 years old and were obtained using a method which does not incorporate resonance effects. For S iv, previous close-coupling calculations do exist but we show that our more elaborate calculation changes the rate coefficients by about 50% at lower temperatures.
- Publication:
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Astronomy and Astrophysics Supplement Series
- Pub Date:
- January 1999
- DOI:
- 10.1051/aas:1999437
- Bibcode:
- 1999A&AS..134..369S
- Keywords:
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- ATOMIC DATA