Journal article

Publication year: 1994

Pages: 3725-3734

Journal: Journal of Physics B: Atomic, Molecular and Optical Physics

Volume number: 27

Issue number: 16

ISSN: 0953-4075

DOI Link: https://doi.org/10.1088/0953-4075/27/16/019

Publisher: IOP Publishing

Abstract: 

The average deflection of a laser excited, divergent sodium beam with a broad velocity distribution is measured by means of a Langmuir-Taylor detector and exploited for determining the absolute density of the excited state in the interaction area. Simulations of the excitation and deflection process point out that the knowledge of the velocity distribution of the sodium atoms plays a crucial part in obtaining reliable information from deflection measurements. From the comparison of simulated and experimental results we find that in our set-up typically 30% of the sodium atoms are in the excited state when both ground state levels are pumped with an intensity of 35 mW cm^-2 from an electro-optically modulated CW laser beam; the corresponding excited state density is 1.5*10⁹ cm^-3. 

Harvard Citation style: Wiersema, W., Schlatmann, A., Schippers, S. and Morgenstern, R. (1994) Determination of the absolute excited state density of a sodium target by means of beam deflection measurements, Journal of Physics B: Atomic, Molecular and Optical Physics, 27(16), pp. 3725-3734. https://doi.org/10.1088/0953-4075/27/16/019

APA Citation style: Wiersema, W., Schlatmann, A., Schippers, S., & Morgenstern, R. (1994). Determination of the absolute excited state density of a sodium target by means of beam deflection measurements. Journal of Physics B: Atomic, Molecular and Optical Physics. 27(16), 3725-3734. https://doi.org/10.1088/0953-4075/27/16/019