A supersonic laser ablation beam source with narrow velocity spreads

P. Aggarwal; H. L. Bethlem; A. Boeschoten; A. Borschevsky; K. Esajas; Y. Hao; S. Hoekstra; K. Jungmann; V. R. Marshall; T. B. Meijknecht; M. C. Mooij; R. G.E. Timmermans; A. Touwen; W. Ubachs; L. Willmann; Y. Yin; A. Zapara

doi:10.1063/5.0035568

A supersonic laser ablation beam source with narrow velocity spreads

P. Aggarwal, H. L. Bethlem, A. Boeschoten, A. Borschevsky, K. Esajas, Y. Hao, S. Hoekstra^*, K. Jungmann, V. R. Marshall, T. B. Meijknecht, M. C. Mooij, R. G.E. Timmermans, A. Touwen, W. Ubachs, L. Willmann, Y. Yin, A. Zapara

^*Corresponding author for this work

Research output: Contribution to Journal › Article › Academic › peer-review

Abstract

A supersonic beam source for SrF and BaF molecules is constructed by combining the expansion of carrier gas (a mixture of 2% SF6 and 98% argon) from an Even-Lavie valve with laser ablation of a barium/strontium metal target at a repetition rate of 10 Hz. Molecular beams with a narrow translational velocity spread are produced at relative values of Δv/v = 0.053(11) and 0.054(9) for SrF and BaF, respectively. The relative velocity spread of the beams produced in our source is lower in comparison with the results from other metal fluoride beams produced in supersonic laser ablation sources. The rotational temperature of BaF is measured to be 3.5 K. The source produces 6 × 108 and 107 molecules per steradian per pulse in the X2ς+ (ν = 0, N = 1) state of BaF and SrF molecules, respectively, a state amenable to Stark deceleration and laser cooling.

Original language	English
Article number	033202
Pages (from-to)	1-7
Number of pages	7
Journal	Review of Scientific Instruments
Volume	92
Issue number	3
Early online date	3 Mar 2021
DOIs	https://doi.org/10.1063/5.0035568
Publication status	Published - Mar 2021

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© 2021 Author(s).

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Copyright 2021 Elsevier B.V., All rights reserved.

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Aggarwal, P., Bethlem, H. L., Boeschoten, A., Borschevsky, A., Esajas, K., Hao, Y., Hoekstra, S., Jungmann, K., Marshall, V. R., Meijknecht, T. B., Mooij, M. C., Timmermans, R. G. E., Touwen, A., Ubachs, W., Willmann, L., Yin, Y., & Zapara, A. (2021). A supersonic laser ablation beam source with narrow velocity spreads. Review of Scientific Instruments, 92(3), 1-7. Article 033202. https://doi.org/10.1063/5.0035568

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title = "A supersonic laser ablation beam source with narrow velocity spreads",

abstract = "A supersonic beam source for SrF and BaF molecules is constructed by combining the expansion of carrier gas (a mixture of 2% SF6 and 98% argon) from an Even-Lavie valve with laser ablation of a barium/strontium metal target at a repetition rate of 10 Hz. Molecular beams with a narrow translational velocity spread are produced at relative values of Δv/v = 0.053(11) and 0.054(9) for SrF and BaF, respectively. The relative velocity spread of the beams produced in our source is lower in comparison with the results from other metal fluoride beams produced in supersonic laser ablation sources. The rotational temperature of BaF is measured to be 3.5 K. The source produces 6 × 108 and 107 molecules per steradian per pulse in the X2ς+ (ν = 0, N = 1) state of BaF and SrF molecules, respectively, a state amenable to Stark deceleration and laser cooling.",

author = "P. Aggarwal and Bethlem, {H. L.} and A. Boeschoten and A. Borschevsky and K. Esajas and Y. Hao and S. Hoekstra and K. Jungmann and Marshall, {V. R.} and Meijknecht, {T. B.} and Mooij, {M. C.} and Timmermans, {R. G.E.} and A. Touwen and W. Ubachs and L. Willmann and Y. Yin and A. Zapara",

year = "2021",

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doi = "10.1063/5.0035568",

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Aggarwal, P, Bethlem, HL, Boeschoten, A, Borschevsky, A, Esajas, K, Hao, Y, Hoekstra, S, Jungmann, K, Marshall, VR, Meijknecht, TB, Mooij, MC, Timmermans, RGE, Touwen, A, Ubachs, W, Willmann, L, Yin, Y & Zapara, A 2021, 'A supersonic laser ablation beam source with narrow velocity spreads', Review of Scientific Instruments, vol. 92, no. 3, 033202, pp. 1-7. https://doi.org/10.1063/5.0035568

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AU - Aggarwal, P.

AU - Bethlem, H. L.

AU - Boeschoten, A.

AU - Borschevsky, A.

AU - Esajas, K.

AU - Hao, Y.

AU - Hoekstra, S.

AU - Jungmann, K.

AU - Marshall, V. R.

AU - Meijknecht, T. B.

AU - Mooij, M. C.

AU - Timmermans, R. G.E.

AU - Touwen, A.

AU - Ubachs, W.

AU - Willmann, L.

AU - Yin, Y.

AU - Zapara, A.

PY - 2021/3

Y1 - 2021/3

N2 - A supersonic beam source for SrF and BaF molecules is constructed by combining the expansion of carrier gas (a mixture of 2% SF6 and 98% argon) from an Even-Lavie valve with laser ablation of a barium/strontium metal target at a repetition rate of 10 Hz. Molecular beams with a narrow translational velocity spread are produced at relative values of Δv/v = 0.053(11) and 0.054(9) for SrF and BaF, respectively. The relative velocity spread of the beams produced in our source is lower in comparison with the results from other metal fluoride beams produced in supersonic laser ablation sources. The rotational temperature of BaF is measured to be 3.5 K. The source produces 6 × 108 and 107 molecules per steradian per pulse in the X2ς+ (ν = 0, N = 1) state of BaF and SrF molecules, respectively, a state amenable to Stark deceleration and laser cooling.

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A supersonic laser ablation beam source with narrow velocity spreads

Abstract

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