| Autor: |
Scholl, T.J., Holt, R.A., Masterman, D., Rivest, R.c., Rosner, S.D., Sharikova, A. |
| Předmět: |
|
| Zdroj: |
Canadian Journal of Physics; Jul2002, Vol. 80 Issue 7, p713, 10p |
| Abstrakt: |
We have measured the radiative lifetimes of 33 levels of Pr II and 13 levels of Nd II using two variants of the beam-laser method. The levels studied had term energies up to ∼30 000 cm[SUP-1] and lifetimes in the range 6-170 ns. Experimental accuracy was in the range 1-11% . We have used these lifetimes to update transition probabilities for 82 transitions in Pr II in the wavelength range 392-640 nm, which are useful for stellar abundance determinations. [ABSTRACT FROM AUTHOR] |
| Databáze: |
Complementary Index |
| Externí odkaz: |
|
