نتایج جستجو برای: state nuclear track detector
تعداد نتایج: 1181510 فیلتر نتایج به سال:
MoEDAL is a pioneering experiment designed to search for highly ionizing avatars of new physics such as magnetic monopoles or massive (pseudo-)stable charged particles. Its groundbreaking physics program defines a number of scenarios that yield potentially revolutionary insights into such foundational questions as: are there extra dimensions or new symmetries; what is the mechanism for the gene...
Solid-state nuclear track detectors such as CR-39 are used in the detection of charged particles and heavy ions. In this paper, effect two types chemical etching solutions on properties detector 400 µm thickness was studied. The involved calculation parameters which bulk etch rates () respectively well rate ratio (V), then comparing them for solution. We sets each piece dimensions . were irradi...
Abstract In July 2018 an optimization run for the proposed charm cross section measurement SHiP was performed at CERN SPS. A heavy, moving target instrumented with nuclear emulsion films followed by a silicon pixel tracker installed in front of Goliath magnet H4 proton beam-line. Behind magnet, scintillating-fibre, drift-tube and RPC detectors were placed. The purpose this to validate measureme...
I am happy to announce today that the Department’s proposal to set up a Dr Homi Bhabha National Institute has been approved. This will bring together ten premier institutions all over the country under a single research-driven framework. This will help ensure that our scientists and our scientific establishments remain at the forefront of the pursuit of excellence, comparable with the best glob...
For the assessment of radiation effects of clinical ion-beams, dosimetry has to be complemented by information on particle-energy distribution or related quantities. Fluorescence nuclear track detectors made from C,Mg-doped alumina single crystals allow for the quantification of ion track density and energy loss on a single-track basis. In this study, their feasibility and accuracy to quantify ...
A digital system to characterize solid state nuclear track detectors(SSNTD) has been developed. It was used in the study of two detectors and its performance evaluated by comparing the obtained results with those determined by using an analog system, already in use for such purpose. The comparison of the results together with the feasibility and rapidness in data acquisition have demonstrated t...
In this work, the damage caused by passage of alpha particles inside CR-39 nuclear detector material on its chemical structure was studied. All samples at room temperature using a 241Am-Be neutron source with flux 5^10 neutrons.cm-2.s-1 were neutron-irradiated. track detectors, etching is critical step in expanding latent tracks. At 70 °C, NaOH 6.25N etchant found to be useful traces detector. ...
The solid state track detector of celluloid films (cellulose nitrate+camphor 25% an weight) using etching technique is suitable for low energy alpha particle detection . The critical rate of energy loss for track formation in celluloid films is determined as 1 .3 MeV/mg•Ecm2. Irradiated samples are etched in NaOH (6 N) solution at 46•Ž for 10 minutes . The etched tracks are observed under a vie...
Recently, Wang and Høst-Madsen developed group-blind multiuser detectors for use in code-division multiple-access (CDMA) uplink environments in which the base station receiver has the knowledge of the spreading sequences of all the users within the cell, but not that of the users from other cells. Yu and Høst-Madsen later developed an adaptive version of this detector for synchronous CDMA chann...
The MeV region of antineutrino energy is special interest for physics research and monitoring nuclear nonproliferation. Whereas liquid scintillation detectors are typically used to detect the Inverse Beta Decay (IBD), it has recently been proposed with a liquid-organic Time Projection Chamber, which could allow full reconstruction particle tracks IBD final state. We present first comprehensive ...
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