Function adas.r8ah
def r8ah(nu, lu, nl, ll)
-
Calculates the A-value for a hydrogen transition.
Parameters
nu
:int
- upper principal quantum number
lu
:int
- upper angular momentumn quantum number
nl
:int
- lower principal quantum number
ll
:int
- lower angular momentumn quantum number
Returns
float
- transition probability (/s)
Notes
Multiple result by (z+1)**4 for the H-like sequence A-value.
Version History
- Martin O'Mullane, 03-04-2019
- First version
Example
The A-value for the neutral hydrogen transition: (n=8,l=6) to (n=6,l=5)
>>> import adas as adas >>> adas.r8ah(8, 6, 6, 5) 217675.4666087866