نتایج جستجو برای: proportional counter
تعداد نتایج: 108353 فیلتر نتایج به سال:
A scintillation proportional counter with wavelength shifting fiber readout filled with Xe or Kr under a pressure of up to 20 atm is proposed for the low–background experiments on search for dark matter of the Universe and 2K–decay of Kr.
A 550 cm thermal neutron detector was constructed with five parallel sheets of 75 mm thick Li foil (95% enrichment) spaced 1.63 cm apart. Anode wire banks containing a plurality of anode wires were strung on both sides of each foil, six banks in total. The chamber was backfilled with P-10 proportional gas and over-pressured to 1.1, 1.5, 2.0, and 2.8 atm (111, 151, 202, and 284 kPa). The design ...
Abstract In this paper, we deal with the lumpability approach to cope state space explosion problem inherent computation of stationary performance indices large stochastic models. The method is based on a aggregation technique and applies Markov chains exhibiting some structural regularity. Moreover, it allows one efficiently compute exact values when model actually lumpable. notion quasi-lumpa...
The operation of a high energy particle accelerator facility is accompanied by neutron fields which are widely distributed in energy. As the neutron component dominates the dose outside the shielding neutron dose meters are needed for monitoring the radiation level at beam lines and experimental areas which can be accessed by personnel. For this purpose the so-called neutron rem-counter of the ...
We study a multi-class stochastic processing network operating under the so-called proportional fair allocation scheme, and following the head-of-the-line processor sharing discipline. Specifically, each server’s capacity is shared among the job classes that require its service; and allocated, in every state of the network, among the first waiting job of each class to maximize a log-utility fun...
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