BRASS atomic data info page

Database : Atomic data retrieved from the named online provider.

Element : Chemical element.

Ion : Ionization stage of ion producing the line transition, I is neutral, II is singly-ionized, III is doubly ionized, etc.

Lambda : Rest wavelength in Angstroms of the line used to calculate the theoretical line positions.

log(gf) : Atomic oscillator strength value used to calculate the theoretical line profiles.

Lower label : Electronic configuration of lower energy level.

Upper label : Electronic configuration of upper energy level.

E lower : Energy of the lower energy level in eV used to compute the theoretical line profiles.

J lower : Total angular momentum quantum number of the lower energy level.

E upper : Energy of the upper energy level in eV used to compute the theoretical line profiles.

J upper : Total angular momentum quantum number of the upper energy level.

Lande lower : Lande factor for lower energy level.

Lande upper : Lande factor for upper energy level.

Lande mean : Mean value of the lower and upper energy levels.

Rad damp : Radiative damping constant of the line transition.

Stark damp : Stark damping constant of the line transition.

VDW damp : Van der Waals damping constant of the line transition.