Kilohertz laser ablation for doping helium nanodroplets

Journal Article · Mon Oct 15 00:00:00 EDT 2007 · Review of Scientific Instruments

DOI:https://doi.org/10.1063/1.2796849· OSTI ID:21024430

Mudrich, M; Forkl, B; Mueller, S; Dvorak, M; Buenermann, O; Stienkemeier, F ^[1]

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1. Physikalisches Institut, Universitaet Freiburg, D-79104 Freiburg (Germany)

A new setup for doping helium nanodroplets by means of laser ablation at kilohertz repetition rate is presented. The doping process is characterized and two distinct regimes of laser ablation are identified. The setup is shown to be efficient and stable enough to be used for spectroscopy, as demonstrated on beam depletion spectra of lithium atoms attached to helium nanodroplets. For the first time, helium droplets are doped with high temperature refractory materials such as titanium and tantalum. Doping with the nonvolatile DNA basis guanine is found to be efficient and a number of oligomers are detected.

• OSTI ID: 21024430
• Journal Information: Review of Scientific Instruments, Vol. 78, Issue 10; Other Information: DOI: 10.1063/1.2796849; (c) 2007 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA); ISSN 0034-6748
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
ABLATION
ATOMS
BASES
BEAMS
DOPED MATERIALS
DROPLETS
GUANINE
HELIUM
LASERS
LITHIUM
REFRACTORIES
SPECTRA
SPECTROSCOPY
TANTALUM
TITANIUM