The three-dimensional and analytical theory for track growth in solid state nuclear track detector is incorporated in a computer program for calculating track parameters and for plotting track-wall profiles and contours of the track opening in the LR115 detector irradiated by alpha particles. Some differences between the behavior of CR39 and LR115 detectors are discussed. Track parameters as we...

The present contribution deals with the numerical modeling of railway track-supporting systems-using coupled finite-infinite elements-to represent the near and distant field stress distribution, and also employing a thin layer interface element to account for the interfacial behavior between sleepers and ballast. To simulate the relative debonding, slipping and crushing at the contact area betw...

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...

Calibration of the second-generation LIGO interferometric gravitationalwave detectors employs a method that uses injected periodic modulations to track and compensate for slow temporal variations in the differential length response of the instruments. These detectors utilize feedback control loops to maintain resonance conditions by suppressing differential arm length variations. We describe ho...

A beam telescope consisting of four double sided, DC coupled microstrip detectors with VLSI readout electronics has been built and tested in a 70 GeV ? beam at CERN. A signal to noise ratio of 53:1 and a spatial resolution of 2.7m (junction side) and 4.8m (ohmic side) have been observed on the best detectors. A telescope performance for a particle track of xy = 2 ? 3 m and slope = 2 ? 3 rad on ...

We present a sudy of the interactions of Q-balls with matter, and their energy losses in the earth, for a large range of velocities. These calculations are used to compute the fractional geometrical acceptance of underground detectors. Furthermore we computed the light yield in liquid scintillators, the ionization in streamer tubes and the Restricted Energy Loss in nuclear track detectors. Invi...

ABSTRACT Background: and soils with which it comes in contact. There is dual exposure from radon in water i.e. due toinhalation of the radon released from the water into the ambient air and through ingestion whenwater is used for drinking. As radon contaminated water adversely affects the health, it istherefore fundamental from health and hygiene point of view to measure radium concentrationand...