Image converters with thin protecting foils.
نویسندگان
چکیده
منابع مشابه
Irradiation of thin carbon foils with non-homogeneous laser beams
Thin C-foils heated with intense laser beams are used at the Z6 experimental area to investigate energy loss and charge state distribution of heavy ions in a plasma [1]. The presented calculations show the advantage of the 2-sided foil heating versus its 1-sided heating when the irradiating laser flux is spatially strongly non-uniform. Irradiation from two opposite sides can be realized by usin...
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Kapton polyimide is known for its high thermal stability, >400 ◦C. Copper sulfide thin films of 75 and 100 nm thickness were coated on DuPont Kapton HN polyimide foils of 25 μm thickness by floating them on a chemical bath containing copper complexes and thiourea. The coated foils were annealed at 150–400 ◦C in nitrogen, converting the coating from CuS to Cu1.8S. The sheet resistance of the ann...
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Ion acceleration in the interaction of ultrashort intense laser pulses (~ 2×10 W/cm, 10s-100s fs) with thin solid foils of limited transverse extend (~ 10s of μm) is measured experimentally and studied numerically (by PIC simulations). Reducing the target surface area allows hot electrons to be reflected from target edges during or shortly after the laser pulse. This transverse refluxing in suc...
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2014 The energy straggling of heavy ion beams at tandem energies, passing through thin foils, has been studied with ions of mass up to A = 35. Charge exchange in the foils has been found to have a considerable effect on the energy spread. Thickness non-uniformities in the foils can also make significant contributions. Extrapolation of the observations to the case of a uniform carbon stripper fo...
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The performance of high-power converters employing silicon controlled rectifiers (SCRs) operating at several kilovolts and switching several thousands of amperes is strongly dependent on the triggering circuit and the protecting circuit (snubber) used. In this paper two standalone trigger circuit topologies are discussed and test results are given for one of them in particular, built with off-t...
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ژورنال
عنوان ژورنال: The Astronomical Journal
سال: 1956
ISSN: 0004-6256
DOI: 10.1086/107305