Collrad: A code for calculating the quasi-steady state population densities of excited states of hydrogen-like ions
✍ Scribed by G.J. Tallents
- Publisher
- Elsevier Science
- Year
- 1976
- Tongue
- English
- Weight
- 661 KB
- Volume
- 12
- Category
- Article
- ISSN
- 0010-4655
No coin nor oath required. For personal study only.
✦ Synopsis
Title of program COLLRAD state) containing the rates of the various collisional and radia-Catalogue number: AAID tive processes which populate and de-populate each quantum state. We consider the time independent case where quasi-Program obtainable from: CPC Program Library, Queen's steady state equilibrium is established. University of Belfast, N. Ireland (see application form in this issue) Method of solution Computer: UNIVAC 1108 and llOO/ 42;Installation: COLLRAD calculates quantum state densities for hydrogen-Australian National University, Canberra like ions using the collisional-radiative model of Bates et al. [1] and McWhirter and Hearn [2]. Coefficients giving the Operating system: EXEC-8 population densities of the excited states, and the rate of Programming language used: FORTRAN change of the ground state density are calculated for input electron density and temperature by solving a set of simul-High speed store required: 14620 words taneous linear equations. No. of bits in a word: 36 Restrictions on tiw complexity of the problem Overlay structure: None Densities are calculated for excited quantum states in quasisteady state equilibrium. No. of magnetic tapes required: None Other peripherals used: Line printer, card reader Typical running time For execution 1.7 sec on the ANU UNIVAC 1100/42.