Crossed-beam spectroscopy of neon: precision measurement of three <sup>20</sup>Ne wavelengths

S. R. Amin

doi:10.1364/JOSA.73.000862

Journal of the Optical Society of America
Vol. 73,
Issue 6,
pp. 862-863
(1983)
•https://doi.org/10.1364/JOSA.73.000862

Crossed-beam spectroscopy of neon: precision measurement of three ²⁰Ne wavelengths

S. R. Amin

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S. R. Amin, "Crossed-beam spectroscopy of neon: precision measurement of three ²⁰Ne wavelengths," J. Opt. Soc. Am. 73, 862-863 (1983)

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Abstract

In a crossed laser–atomic-beam experiment, three ²⁰Ne wavelengths are measured to a precision of 1 part in 10⁹. Our values for these transitions are (2p₅–1s₃) 6268.228974(6), (2p₈–1s₅) 6336.180256(6), and (2p₇–1s₃) 6534.687792(7) Å. Our results disagree with previous, less-precise experiments; however, the disagreement can be explained in terms of the isotope shift between ²⁰Ne and ²²Ne.

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	Transition

Correction^a	Ne (6268 Å)	Ne (6336 Å)	Ne (6534 Å)
Phase shift^b	111	−11	−402
Index of refraction^c	9	−2	−31
Nonlinearity in scan	−12	−21	−18
Wavelength standard	−5	−5	−5
Diffraction	3	3	3
Second-order Doppler shift	0	0	0
Photon recoil	1	1	1
Total, phase-shift data only	107^b	−35^b	−452^b
Total, virtual-mirrors data	−4^d	−24^d	−50^d

	Transition

Error^a	Ne (6268 Å)	Ne (6336 Å)	Ne (6534 Å)
Statistical error	9^b, 5^c	12^b, 6^c	8^b, 5^c
Recording and pressure scanning	6	6	6
Wavelength standard	5	5	5
Nonuniformity of mirror	3	3	3
Diffraction correction	1	1	1
Second-order Doppler: photon recoil, index refraction, minor effects	0	0	0
Total^c	10	10	10
Total^b	12	15	12

	Present Results (Å)

Transition	Phase Shift	Virtual Mirror	Average (Å)
Ne 6268-Å line	6268.228965(6)	6268.228985(7)	6268.228974(6)
Ne 6336-Å line	6336.180256(6)	6336.180256(10)	6336.180256(6)
Ne 6534-Å line	6534.687793(7)	6534.687789(8)	6534.687792(7)

Transition	Present Results (Å)	Previous Measurements^a (Å)
Ne 6268-Å line	6268.228974(6)	6268.2283(3)
Ne 6336-Å line	6336.180256(6)	6336.1794(3)
Ne 6534-Å line	6534.687792(7)	6534.6870(3)

	Transition

Correction^a	Ne (6268 Å)	Ne (6336 Å)	Ne (6534 Å)
Phase shift^b	111	−11	−402
Index of refraction^c	9	−2	−31
Nonlinearity in scan	−12	−21	−18
Wavelength standard	−5	−5	−5
Diffraction	3	3	3
Second-order Doppler shift	0	0	0
Photon recoil	1	1	1
Total, phase-shift data only	107^b	−35^b	−452^b
Total, virtual-mirrors data	−4^d	−24^d	−50^d

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