Measured level lifetimes for the coronal transitions of Fe X and Fe XIV.

Journal Article · Sat May 01 00:00:00 EDT 1999 · Astrophys. J. Lett.

DOI:https://doi.org/10.1086/312006· OSTI ID:942486

Moehs, D P; Church, D A

In a laboratory study, the lifetimes of the {sup 2}P levels producting the coronal transitions of Fe X and Fe XIV have been measured. The fluorescence from the metastable levels, which were populated when the ions wre produced in a source of multiply charged ions, was studied from the selected ions were injected into an electrostatic ion trap. The results are {tau}(FeX, 3s{sup 2}3p{sup 5} {sup 2}P{sup 0}{sub 1/2})=13.64{+-}0.25 ms and {tau}(Fe XIV, 3s{sup 2}3p{sup 2}P{sup 0}{sub 1/2})=17.52{+-}0.29 ms. The data significantly reduce the uncertainty of the lifetimes when compared with existing theory.

• Research Organization: Argonne National Lab. (ANL), Argonne, IL (United States)
• Sponsoring Organization: USDOE Office of Science (SC)
• DOE Contract Number: DE-AC02-06CH11357
• OSTI ID: 942486
• Report Number(s): ANL/PHY/JA-31942; TRN: US200916%%496
• Journal Information: Astrophys. J. Lett., Vol. 516, Issue 2, Pt. 2 ; May 1999; ISSN 0004-637X
• Country of Publication: United States
• Language: ENGLISH

Related Subjects

36 MATERIALS SCIENCE
IRON
ENERGY-LEVEL TRANSITIONS
LIFETIME
FLUORESCENCE