Solid-state nuclear track detectors (SSNTDs) have been widely applied for measurements of environmental concentrations of 222Rn and its progeny. The V function for an SSNTD is important for understanding the track development in the SSNTD as well as for real life applications. The partial sensitivity rhoi of the LR 115 detector applied in the bare mode to 222Rn and its short-lived progeny is re...

In the traditional dwellings, source of Rn is the bare soil floor, either soil in cave dwellings or unburned adobe bricks and uncovered stone, wall in above ground dwellings. Because of the short half life of Rn, the indoor concentration is not homogeneous but increases towards the walls, floorings and ceilings. In view of this an extensive study is made by using the solid state nuclear track d...

In this research, radon gas concentration was measured for a number of schools located in Diyala Governorate, Iraq, using the CR-39 detector, which is from Solid State Nuclear Track Detectors (SSNTDs). classrooms, detector set at distance 160 cm earth’s surface, period time, these detectors were exposed (30 days). Where results showed that ranged lowest value equal to(8.528)Bq/m3 sample (D5) (A...

Solid-state nuclear track detectors (SSNTDs), such as LR 115, have been commonly used in diffusion chambers for long-term measurements of radon gas concentrations. For the LR 115 SSNTD, it has been found that the active layer removed during chemical etching is significantly affected by the presence and amount of stirring, and thus cannot be controlled easily. However, the sensitivity of the LR ...

The aim of this paper is to determine the maximum values of the track length (Lmax) of alpha particles in Nuclear Track Detector (type CR-39) using a new method by taking the relation between the etching time and the diameter square of alpha particle with different energies at constant bulk etch rate VB (1.45 μm/hr) by using TRACK_TEST program from Brun et al. function and Yu et al. function. U...

Among numerous applications of Solid-State Nuclear Track Detector (SSNTD), one important application is estimating radon and thoron concentration in an indoor environment. The primarily used SSNTD for this LR-115. Studying the behaviour these SSNTDs different etching solutions essential. In report, Lithium hydroxide solution was to etch LR-115 SSNTD. study thickness film removed carried out at ...

A review is accomplished on the Softcomputing approaches in the field of nuclear track measurements for polymer solid state nuclear track detectors which have been commonly used for passive dosimetry applications. Several works presented in the last two decades were addressed. A general scheme of a Softcomputing method for nuclear track measurement is expressed from a global viewpoint.

MACRO was a large multipurpose underground detector located in the Hall B of the Laboratori Nazionali del Gran Sasso. The detector, which took data until December 2000, was arranged in a modular structure of six “supermodules” with global dimensions of 76.5 × 12 × 9.3m and a total acceptance of ∼ 10, 000 msr to an isotropic flux of particles. It was made by several layers of liquid scintillatio...

Since the dawn of the nuclear weapons era, political, military, and scientific leaders around the world have been working to contain the proliferation of Special Nuclear Material and explosively fissile material. This paper describes the construction of a prototype, directional, fast neutron detector, modeled after the Dark Matter Time Projection Chamber. Fast neutrons are emitted by a host of ...