Optimal algorithm combine the reading of two dosimeters that one of them have been on the chest and the other on the back properly; to obtain the best estimate for the effective dose. In this study, optimal algorithm was ...

simple neutron dosimeter.



Methods: The primary dosimeter had 3He as a spherical thermal neutron detector encircled by paraffin 10 cm in radius. Then, the paraffin sphere was replaced with ICRU that contains soft tissue and dose equivalent...

code.

Results: We found that the PE-Bi shield decreases the absorbed dose to 77%

compared with “no shield” and 74% compared to concrete. Also, the reduction rate of

dose equivalent was 95% compared to “no shield” and 91% compared to colemanite...

. To prevent receiving the dose from γ-rays produced in system by patient, an efficient strategy is to apply γ-shield. In previous publication, absorbed dose, dose equivalent and sensitivity factor were considered for cubic water phantom.The Monte Carlo...

Measurement of body composition by total body in vivo neutron activation analysis is providing a valuable tool for clinical research in many areas of study. Changes in body composition may be diagnostic for the progression ...

Harmful biological effect in human body is one of important concerns in neutron infected places. In the other hand it is inevitable for someone to present in such environments. So, designing and manufacturing neutron ...

of spherical

Pb shield was investigated and compared with the

unfiltered bare source, using MCNP4C code. Then, the

gamma ray dose equivalent per source neutron rate

(user defined parameter) in the soft tissue is...

selected and were placed in two separate positions: around the source and around the patient.

With MCNPX 2.4.0 code, the absorbed dose and dose equivalent per one neutron emitted from the neutron were calculated on cubic water phantom...

-ray shield, enclosing

neutron source. Gamma-ray shielding effects and optimum radius of spherical Pb shield have

been investigated and compared with the unfiltered case, bare source, using MCNP4C code.

At the end the gamma ray dose...