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Issue 42, 2011
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A bright, slow cryogenic molecular beam source for free radicals

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Abstract

We demonstrate and characterize a cryogenic buffer gas-cooled molecular beam source capable of producing bright beams of free radicals and refractory species. Details of the beam properties (brightness, forward velocity distribution, transverse velocity spread, rotational and vibrational temperatures) are measured under varying conditions for the molecular species SrF. Under typical conditions we produce a beam of brightness 1.2 × 1011 molecules/sr/pulse in the X2Σ+(v = 0, Nrot = 0) state, with Image ID:c1cp20335e-t1.gif forward velocity and a rotational temperature of ≈ 1 K. This source compares favorably to other methods for producing beams of free radicals and refractory species for many types of experiments. We provide details of construction that may be helpful for others attempting to use this method.

Graphical abstract: A bright, slow cryogenic molecular beam source for free radicals

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Publication details

The article was received on 08 Feb 2011, accepted on 03 May 2011 and first published on 24 Jun 2011


Article type: Paper
DOI: 10.1039/C1CP20335E
Citation: Phys. Chem. Chem. Phys., 2011,13, 18936-18947
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    A bright, slow cryogenic molecular beam source for free radicals

    J. F. Barry, E. S. Shuman and D. DeMille, Phys. Chem. Chem. Phys., 2011, 13, 18936
    DOI: 10.1039/C1CP20335E

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