Nuclear Science and Technology
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Dose Calculation and Measurement from B¹⁰(n, α)Li⁷ Reaction Using Filtered Neutron Beam at Nuclear Research Institute
Nuclear Science and Technology - Tập 8 Số 1 - 2018
In this research, dose calculation and measurement from B10 (n, α) Li7 reaction
usingfiltered neutron beam at the Nuclear Research Institute have been reported.
Calculation was carried out by Monte Carlo method using MCNP5 code. Neutron
activation technique using vanadium foil was employed to determine neutron flux
at various positions in phantom from which neutron dose has been calculated
using c...
#Dose calculation #Monte Carlo #BNCT
Production of exoctic fragments by photofission process combined with stopping gas cell at ELI-NP facility
Nuclear Science and Technology - Tập 5 Số 3 - 2015
Extreme Light Infrastructure Nuclear Physics (ELI-NP) facility is being built at
Bucharest-Magurele, which then allow us to do research about nuclear physics
using a new set of research tools: high power laser system and high brilliance
gamma beams. One of day-one experiment proposed at this facility is to study the
photofission of actinide by the high-intensity gamma beam through measurement of
m...
#ELI-NP #photofission #IGISOL #CSC: cryogenic stopping gas cell
Production of Radioisotopes and Radiopharmaceuticals at the Dalat Nuclear Research Reactor
Nuclear Science and Technology - Tập 4 Số 1 - 2014
After reconstruction, the Dalat Nuclear Research Reactor (DNRR) was inaugurated
on March 20th, 1984 with the nominal power of 500 kW. Since then the production
of radioisotopes and labelled compounds for medical use was started. Up to now,
DNRR is still the unique one in Vietnam. The reactor has been operated safely
and effectively with the total of about 37,800 hrs (approximately 1,300 hours
per ...
#Radioisotope #Radiopharmaceutical #Labelled KIT #Nuclear Medicine
RADIONUCLIDES CONCENTRATION IN THE MAIN KINDS OF FOODS & FOODSTUFFS IN SOME ECOLOGICAL REGIONS OF VIETNAM
Nuclear Science and Technology - Tập 2 Số 2 - 2012
To acquire the existence of natural and artificial radionuclides in the main
kinds of foods & foodstuffs samples is a necessary task for assessing the
environment impact. For this reason, the Ministry of Science and Technology had
approved a project on “Investigation on radionuclides and toxic elements
concentration in the main kinds of foods & foodstuffs of Vietnam”. The paper
focused on: Concent...
#Radionuclides #Foods & foodstuffs #International Commission for Radiological Protection (ICRP) #Food and Agriculture Organization (FAO)
Relative output factors of different collimation systems in truebeam STx medical linear accelerator
Nuclear Science and Technology - Tập 9 Số 4 - 2019
The IAEA TRS483 and TRS398 Code of Practices (CoP) were used to calculate
relative output factors for small photon beams of 6X, 6XFFF energies shaped by
High Definition Multileaf Collimator (HDMLC), jaws and cones mounted on TrueBeam
STx medical linear accelerator (Varian Medical Systems), respectively. A
comparison between these results were made. The results show a large discrepancy
in relative ...
#TRS483 code of practice #small field dosimetry #relative output factors
Study on the immuno stimulation of radiation degraded β-glucan in swiss mice
Nuclear Science and Technology - Tập 5 Số 4 - 2015
The mixtures β-glucan extracted from the yeast cell wall were irradiated under
gamma rays from a Co-60 source at doses of 100, 200 and 300 kGy in order to
prepare water-soluble β-glucan. Yields of the water soluble β-glucan produced
are 25.9, 49.1, 66.71%, and their molecular weights (Mw) are 30.5, 24.9 and 10.8
kDa, respectively. There are no any new peak in the IR spectra of the irradiated
β-glu...
#oligoβ-glucan #gamma irradiation #degradation #immune stimulation #Swiss mice
Assessment of steam condensation model with the presence of non-condensable gas in a vertical tube using RELAP5 Mod 3.2 code and MIT exp. Data
Nuclear Science and Technology - Tập 4 Số 3 - 2014
The non-condensable gas effect is a primary concern in some passive systems used
in advanced design concepts, such as the Passive Residual Heat Removal System
(PRHRS) of AP1000, APR1400, AES-2006, the Passive Containment Cooling System
(PCCS) of AP1000 design, and Isolation Condensation System (ICS) of ESBWR
design. The accumulation of the non-condensable gas inside the condensing tubes
can signif...
#Steam condensation #non-condensable gas #heat transfer #passive system
Application of Evolutionary Simulated Annealing Method to Design a Small 200 MWt Reactor Core
Nuclear Science and Technology - Tập 10 Số 4 - 2020
This paper presents the application of an evolutionary simulated annealing (ESA)
method to design a small 200 MWt reactor core. The core design is based on a
reference ACPR50 reactor deployed in a floating nuclear power plant. The core
consists of 37 typical 17x17 PWR fuel assemblies with three different U-235
enrichments of 4.45, 3.40 and 2.35 wt%. Core loading pattern (LP) has been
optimized for...
#Small reactor #core design optimization #ESA method
PHASE STRUCTURE IN AN ASYMMETRIC MODEL OF NUCLEAR MATTER
Nuclear Science and Technology - Tập 2 Số 1 - 2012
The phase structure of asymmetric nuclear matter in the extended Nambu -
Jona-Lasinio (ENJL) model is studied by means of the effective potential in the
one-loop approximation. It is found that the critical temperature for the
liquid-gas phase transition decreases with increasing neutron excess. A typical
firstorder phase transition of the liquid-gas transition occurs for y > 0:35 and
eventually t...
#isospin asymmetry #phase transition #nuclear matter
The effect of gamma-irradiation on graphene oxide in a monoglyceride/ethanol solution
Nuclear Science and Technology - Tập 6 Số 3 - Trang 48-56 - 2016
Gamma-irradiation effects on graphene oxide (GO) in a monoglyceride/ethanol
(MG/EtOH) solution was investigated. GO was dispersed in MG/EtOH solution (GOM)
with the GO: MG ratio of 1:10 (w/w). The prepared GOM was irradiated by g-ray
under nitrogen atmosphere in a range of absorbed dose from 0 to 50 kGy. The
characteristics and morphology of reduced GOM were analyzed by
Ultraviolet-visible (UV-vi...
#reduction #monoglyceride #graphene oxide #ɣ-ray
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