منابع مشابه
Facile time-of-flight methods for characterizing pulsed superfluid helium droplet beams.
We present two facile time-of-flight (TOF) methods of detecting superfluid helium droplets and droplets with neutral dopants. Without an electron gun and with only a heated filament and pulsed electrodes, the electron impact ionization TOF mass spectrometer can resolve ionized helium clusters such as He2(+) and He4(+), which are signatures of superfluid helium droplets. Without ionizing any hel...
متن کاملUniversal molecule injector in liquid helium: Pulsed cryogenic doped helium droplet source
Progress toward the construction of a universal molecule injector for doping bulk liquid helium is reported. A pulsed valve that operates at cryogenic temperatures, down to 4 K, is demonstrated within the confinement of a cryostat, operating in the vapor above a steady level of liquid He. The insulated valve can be operated at elevated temperatures with preseeded helium gas in supersonic expans...
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Intense pulsed light (IPL) is one of the most effective nonablative approaches to treat skin photoaging. The broad range of wavelengths (500–1200 nm) emitted from IPL devices effectively target both melanin and hemoglobin in the skin. Numerous trials show the effectiveness and compatibility of IPL devices in a variety of skin conditions, especially in cosmetic indications such as hypertrichosis...
متن کاملIntense Electron and Ion Beams
Material characteristics versus the number of electrons in the valence atom shell not used in the previously published papers are presented here. The electric field interaction with the collective electrons and the ion skeletons of the electrode material result in the initiation of the plasma formation (ecton) on the surface of one of the electrodes and the breakdown of the interelectrode gap. ...
متن کاملExperimental Investigations of High Voltage Pulsed Pseudospark Discharge and Intense Electron Beams
A high voltage pulsed discharge device which can produce intense high energy electron beam named “pseudospark” is presented in this work. This discharge device is able to hold 10s of kV voltage, kA current and 10 10 -10 11 A/s current rising rate. The pseudospark device is also a simply-constructed source for intense electron beam with high energy. The presented experimental investigation is fo...
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ژورنال
عنوان ژورنال: Review of Scientific Instruments
سال: 2002
ISSN: 0034-6748,1089-7623
DOI: 10.1063/1.1505661