Mean Lives of Excited Levels in Fluorine*

H. G. Berry; I. Martinson; R. M. Schectman; W. S. Bickel; H. P. Palenius

doi:10.1364/JOSA.60.001461

Journal of the Optical Society of America
Vol. 60,
Issue 11,
pp. 1461-1462
(1970)
•https://doi.org/10.1364/JOSA.60.001461

Mean Lives of Excited Levels in Fluorine

H. G. Berry, I. Martinson, R. M. Schectman, W. S. Bickel, and H. P. Palenius

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H. G. Berry, I. Martinson, R. M. Schectman, W. S. Bickel, and H. P. Palenius, "Mean Lives of Excited Levels in Fluorine*," J. Opt. Soc. Am. 60, 1461-1462 (1970)

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Abstract

Beam-foil spectra showing about 200 fluorine lines (F ii to F vi) between 1050 and 4000 Å have been observed. Measurements of intensity decays for 17 lines below 2000 Å yielded mean lives for 15 excited levels in F iii, F iv, and F vi.

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Wavelength (Å)	Spectrum	Transition^a	Mean life^b (ns)
1060	F iv	$3 d {{}^{3}D}_{3} - 4 f (\frac{1}{2}) {[\frac{7}{2}]}_{4}$	2.4 ± 0.2
1076	F iv	$3 d {{}^{3}P}_{2} - 4 f (\frac{3}{2}) {[\frac{5}{2}]}_{3}$	2.1 ± 0.2
1095	F iii	3p ⁴D–4d ⁴F	4.7 ± 0.5
1113	F iii	2p′ 2P–3p ²D	4.4 ± 0.5
1135	F iv	$3 d {{}^{1}F}_{3} - 4 f (\frac{3}{2}) {[\frac{9}{2}]}_{4}$	2.3 ± 0.2
1139	F vi	2p ¹P–2p′ ¹D	2.3 ± 0.1^c
1267	F iii	3d ⁴F_9/2–5f(2)[5]_11/2	1.8 ± 0.2
1282	F iii	$\bar{3 d} {{}^{2}F}_{7 / 2} - \bar{5 f} {[4]}_{7 / 2, 9 / 2}$	1.9 ± 0.2
1306	F iii	${\begin{array}{l} 3 d {{}^{4}D}_{7 / 2} - 5 f (2) {[4]}_{9 / 2} \\ \bar{3 d} {{}^{2}G}_{9 / 2} - \bar{5 f} {[5]}_{9 / 2, 11 / 2} \end{array}}$	1.6 ± 0.2^c
1362	F iii^c	$3 p {{}^{2}S}_{\frac{1}{2}} - 4 s {{}^{2}P}_{\frac{1}{2}}$	0.9 ± 0.1^c
1394	?	?	0.9 ± 0.1^e
1505	F iii	3p ⁴D–4s ⁴P	1.2 ± 0.1
1538	F iii	3p′ ⁶P–4s′ ⁶S	0.6 ± 0.1
1604	F iv^d	?	1.0 ± 0.1^e
1625	F iii	3p ²D–4s ²P	1.0 ± 0.1^e
1768	F iii	${\begin{array}{c} 3 d {{}^{4}F}_{9 / 2} - 4 f (2) {[5]}_{11 / 2} \\ 3 d {{}^{4}F}_{\frac{3}{2}} - 4 f (1) {[3]}_{\frac{3}{2}} \\ 3 d {{}^{4}F}_{\frac{3}{2}} - 4 f (1) {[4]}_{7 / 2} \end{array}}$	1.0 ± 0.1^e
1838	F iii	${\begin{array}{l} 3 d {{}^{4}D}_{7 / 2} - 4 f (2) {[4]}_{9 / 2} \\ \bar{3 d} {{}^{2}G}_{9 / 2} - \bar{4 f} {[5]}_{9 / 2, 11 / 2} \end{array}}$	1.4 ± 0.1

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