نتایج جستجو برای: cryogenic liquid
تعداد نتایج: 224463 فیلتر نتایج به سال:
Hugoniot data were obtained for fluid He in the 100 GPa pressure range by shock compression of samples statically precompressed in diamond-anvil cells. The initial (precompressed) He density (rho_(1)) for each experiment was tuned to a value between rho_(0L)<rho_(1)<3.3rho_(0L), where rho_(0L) is the zero-pressure density of the cryogenic liquid (rho_(0L)=0.123 g/cm(3)). The maximum observed sh...
Parity-violating electron scattering measurements on hydrogen and deuterium, such as those underway at the Bates and CEBAF laboratories, require luminosities exceeding 1038cm−2s−1, resulting in large beam power deposition into cryogenic liquid. Such targets must be able to absorb 500 watts or more with minimal change in target density. A 40 cm long liquid hydrogen target, designed to absorb 500...
The spectrum of the luminescence pulse from collapsing laser-induced bubbles in water and cryogenic liquids has been measured. For small bubbles in water the spectrum approximates that of a black-body at about 7800 K, while for bubbles whose maximum radius is greater than 1 mm the OH* molecular band at 310 nm becomes apparent, a feature which is also seen in multi-bubble sonoluminescence. The l...
nitrogen is produced mainly from its most abundant source, the air, using three processes: membrane, pressure swing adsorption (psa) and cryogenic. the most common method for evaluating a process is using the selection diagrams based on feasibility studies. since the selection diagrams are presented by different companies, they are biased, and provide unsimilar and even controversial results. i...
Significant advances in the development of high electron-mobility field-effect transistors (HEMTs) have resulted in cryogenic, low-noise amplifiers (LNAs) whose noise temperatures are within an order of magnitude of the quantum noise limit (hf/k). Further advances in HEMT technology at cryogenic temperatures may eventually lead to the replacement of maser and superconducting–insulator– supercon...
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