TAILIEUCHUNG - Báo cáo " DENOTING THE NUCLEAR ISOTOPES IN EXPERIMENTAL GAMMA SPECTRUM"

Nuclear isotopes making experimental gamma energy spectrum are denoted via their energies. One energy level of an isotope is supposed presence in the spectrum, if there is an energy level that is different from it with a value less than its error. With suitable database, the program can be used to identify isotopes even stable isotopes by using α, β , X spectra. | VNU. JOURNAL OF SCIENCE Mathematics - Physics. No2 - 2005 DENOTING THE NUCLEAR ISOTOPES IN EXPERIMENTAL GAMMA SPECTRUM Nguyen Trung Tinh Department of Physics College of Sciences VNU Abstract. Nuclear isotopes making experimental gamma energy spectrum are denoted via their energies. One energy level of an isotope is supposed presence in the spectrum if there is an energy level that is different from it with a value less than its error. With suitable database the program can be used to identify isotopes even stable isotopes by using a p X spectra. Introduction In some nuclear researching processes for example in radioactivity measurement of environment sample in activation analysis a gamma energy spectrum of nuclear isotopes in studied objects are received. After analysing this spectrum the following parameters are obtained - Gamma energy levels after eliminating noises and their standard deviations. - Intensities of these levels and their standard deviations. The nomenclature intensity means counts or velocity of counts for energy levels correspondent of studied object. Spectra without any noises are used in different purposes. The spectra can be used to identify isotopes contained in studied object. In our case gamma energy spectrum is used for denoting the isotopes making spectrum its means that these isotopes contained in the studied object. The activities of isotopes can be known by using the above informations. In order to identify the isotopes in studied object at first the database containing informations of isotopes must be built the second in order to analyse a spectrum exactly and quickly we establish this energy spectrum in a suitable form. By comparing informations of the isotopes in the database with the ones in the spectrum we can identify the isotopes and estimate intensities of their energy levels in the spectrum. 1. Constructing the database for denoting nuclear isotopes The problem is denotement nuclear isotopes making a gamma energy .

• Báo cáo khoa học
• GAMMA SPECTRUM
• Mathematics
• Physics
• Scientific reports
• scientific studies
• natural sciences
• Phương pháp phân tích toàn phổ FSA
• Phương pháp FSA
• Full Spectrum Analysis
• Xử lý phổ gamma tán xạ trên bê tông
• Phổ gamma tán xạ ngược
• NaI(Tl) scintillation detector
• Spectrum stabilization
• Peak detection
• Spectrum analysis
• Geiger Muller counters
• Gamma ray spectrum
• Gamma ray transport simulations
• Ray tracing algorithm
• Nuclear radiation source characteristics
• MonteCarlo code MCNP5
• Radiation measurements
• Scintillation gamma spectrometry
• Spectrum drift correction
• Dose rate measurement
• OSL dating
• Gamma spectrometry
• Efficiency calibration
• Environmental samples
• Monte Carlo simulation
• HPGe spectrometer
• PGNAA facility
• Dalat research reactor
• Characteristics of the PGNAA facility
• Cadmium ratio
• Frequency and spectrum
• Gamma rays
• Induced mutations in homozygous
• Heterozygous genotypes of soybean
• Heterozygous genotypes
• Viable mutants
• Electron beam
• Recurrent mutation
• Iable mutants in M2 generation
• M2 generation of rice
• Cicer arietinum L
• Combination treatments
• Macro mutations
• Seed mutants
• Morphological mutations