Results 1 to 10 of about 93,884 (203)

Measurement of ambient dose equivalent in compact proton therapy using in-house neutron moderator-based poly allyl diglycol carbonate [PDF]

Journal of Medical Physics, 2023
Purpose: The high-energy proton produces the unwanted dose contribution from the secondary neutron. The main purpose of this study is to report the validation results of in-house neutron moderator based on poly allyl diglycol carbonate (CR-39) detector ...
Tanawat Tawonwong, Sivalee Suriyapee, Tanapol Dachviriyakij, Vithit Pungkun, Sirinya Ruangchan, Taweap Sanghangthum   +5 more
doaj   +2 more sources

Influence of solar activity on ambient dose equivalent H*(10) measured with thermoluminescent dosimeters in Slovenia [PDF]

Arhiv za Higijenu Rada i Toksikologiju, 2021
Ambient dose equivalent H *(10) is measured to assess general population exposure to ionising radiation. From its spatial and time variations it is possible to identify sources of exposure.
Zorko Benjamin, Korun Matjaž, Črnič Boštjan, Vodenik Branko, Gobec Sandi   +4 more
doaj   +2 more sources

An analytic model of neutron ambient dose equivalent and equivalent dose for proton radiotherapy. [PDF]

Phys Med Biol, 2010
Stray neutrons generated in passively scattered proton therapy are of concern because they increase the risk that a patient will develop a second cancer. Several investigations characterized stray neutrons in proton therapy using experimental measurements and Monte Carlo simulations, but capabilities of analytical methods to predict neutron exposures ...
Zhang R, Pérez-Andújar A, Fontenot JD, Taddei PJ, Newhauser WD.   +4 more
europepmc   +4 more sources

PROCEDURES TO MEASURE MEAN AMBIENT DOSE EQUIVALENT RATES USING ELECTRET ION CHAMBERS. [PDF]

Radiat Prot Dosimetry, 2020
Abstract The capabilities of electret ion chambers (EICs) to measure mean ambient dose equivalent rates were investigated by performing both laboratory and field studies of their properties. First, EICs were ‘calibrated’ to measure ambient gamma dose equivalent in the Ionizing Calibration Laboratory of the Greek Atomic Energy Commission.
Leontaris F, Boziari A, Clouvas A, Kolovou M, Guilhot J.   +4 more
europepmc   +4 more sources

Monte Carlo Simulations of Neutron Ambient Dose Equivalent in a Novel Proton Therapy Facility Design [PDF]

International Journal of Particle Therapy, 2020
Purpose: The neutron shielding properties of the concrete structures of a proposed proton therapy facility were evaluated with help of the Monte Carlo technique.
Uwe Titt, Enzo Pera, Michael T. Gillin
doaj   +2 more sources

Investigating the soil surface properties behind elevated natural radiation in Mamuju, Indonesia [PDF]

Scientific Reports
Mamuju Regency, Indonesia, is among the world’s notable high natural background radiation areas (HBNRAs). This study examines the environmental and geochemical processes responsible for the accumulation of uranium (U), thorium (Th), and potassium (K) in ...
Adi Rahmansyah Amir Abdullah, Sidik Permana, Wahyu Srigutomo, Alan Maulana, Dwi Irwanto, Haryo Seno, Dikdik Sidik Purnama, Hakimul Wafda, Cici Wulandari, Wahyudi Wahyudi, Muhammad Muhyidin Farid, Ilsa Rosianna, Ismail Humolungo, Zulfahmi Zulfahmi, Eka Djatnika Nugraha   +14 more
doaj   +2 more sources

Nationwide mapping of terrestrial gamma radiation in South Korea using a car-borne survey system [PDF]

Scientific Reports
This study conducted a nationwide car-borne radiation survey to assess background radiation levels originating from naturally occurring radionuclides across South Korea.
Jaeho Jang, Jaewoo Park, Byung-Uck Chang, Yong-Jae Kim   +3 more
doaj   +2 more sources

Comparison of calibration factors for field-class dosimeters [PDF]

Nuclear Technology and Radiation Protection, 2022
This paper presents a comparison performed between two calibration laboratories in several radiation qualities, using dosimeters of varying quality as transfer instruments.
Živanović Miloš Z., Šabeta Amra F., Kržanović Nikola Lj., Makarić Vedrana D., Đaletić Miloš V., Stupar Milica R., Stanković Srboljub J.   +6 more
doaj   +1 more source

Neutron conversion coefficients of ambient dose equivalent and personal dose equivalent

Polish Journal of Medical Physics and Engineering, 2022
Abstract Introduction: This work aims to calculate the ambient and personal dose equivalent conversion coefficients. Material and methods: The conversion coefficients have been calculated using MC simulation.
Hassan Al Kanti, Otman El Hajjaji, Tarek El Bardouni, Maged Mohammed   +3 more
openaire   +1 more source

Ambient dose equivalent rate from ¹³⁷Cs and natural radionuclides in one-story residential buildings in settlements of the Bryansk region in 2020–2021

Радиационная гигиена, 2022
Method of in situ gamma-ray spectrometry was used to discriminate contributions of 137Cs and natural radionuclides to ambient dose equivalent rate indoors in settlements located in the zones of radioactive contamination after the Chernobyl accident.
V. P. Ramzaev, A. N. Barkovsky, A. A. Bratilova   +2 more
doaj   +1 more source