TAILIEUCHUNG - Báo cáo " DETERMINING THE ISOMERIC RATIO OF NUCLEAR REACTION 46 Ti (γ, pn)44 Sc BY EXPERIMENT "

The bremsstrahlung beam with energy end point of 65M eV created when the e− beam with energy of 65M eV irradiated to thin wolfram target was used to irradiate to TiO2 sample in order to make the 46 Ti (γ, pn)44m,g Sc reaction. The gamma spectrum of Sc44m,g was analyzed by the gammavision spectrometry with HPGe detector at linear accelerator laboratory in POSTECH, Korea. | VNU. JOURNAL OF SCIENCE Mathematics - Physics. N01 - 2005 DETERMINING THE ISOMERIC RATIO OF NUCLEAR REACTION 46Ti YiPn 44Sc BY EXPERIMENT Tran Tri Vien Doan Quang Tuyen Nguyen Trung Tinh College of Science VNU Abstract. The bremsstrahlung beam with energy end point of 65MeV created when the e- beam with energy of 65MeV irradiated to thin wolfram target was used to irradiate to TiO2 sample in order to make the 46Tì yì pn 44m gSc reaction. The gamma spectrum of Sc44m g was analyzed by the gammavision spectrometry with HPGe detector at linear accelerator laboratory in POSTECH Korea. As the result the isomeric ratio Tm Tg of the reaction is presented. 1. Introduction The isomeric ratio data of nuclear take an important role in nuclear structure research and nuclear reaction mechanism that why there are many laboratories in the world studying these. In our experiment the beam of bremsstrahlung radiations is created when e- current with energy of 65MeV irradiating to thin wolfram - target then the bremsstrahlung beam irradiating to TiO2 sample of pure degree. After 2 hours of irradiation the sample disintegrates in a period of time depending on the sample radioactivity. The sample is measured by the geometric arrangement fixed for minimizing the error. The 44 Sc is created by reaction as follows Y 46Ti 44Sc n p. After being produced 44Sc nuclei is in excited states. However the life-time of these states is very short 10-1osec . Then the nuclei jump into the lower energy states and at the end they jump to the isomeric state or ground state. On the other hand 44Sc is a radioactive nuclear. It disintegrates to 44Ca from isomeric state and ground state. The gamma spectrum of 44Sc created from two parts one is due to 44Sc transferred from isomeric state in to ground state and the other is due to 44Ca transferred from higher energy excited states to the lower one or to the ground state . 2. Calculating the essential parameters of reaction In this paper the .

• Báo cáo khoa học
• DETERMINING
• Mathematics
• Physics
• Scientific reports
• scientific studies
• natural sciences
• Vietnam Journal of Mechanics
• Determining the reactions of mechanical constraints
• Determining the reactions
• Holonomic and nonholonomic constraints
• Large size and dense
• Vietnam journal of earth sciences
• An improved space domain algorithm
• Determining the 3 D structure of the magnetic basement
• Determining the 3 D structure
• The magnetic basement
• Determining reaction forces in planar mechanisms
• Determining reaction forces
• Constraint forces and internal forces
• Det ermine joint reaction forces
• Line and testers
• Sunflower (Helianthus annus L )
• Determining combining ability in sunflower
• Determining combining ability
• Flowering and harvest index
• công nghệ thông tin
• tin học văn phòng
• MOC
• Microsoft Official Curriculum
• Workshop
• Cisco Systems
• Network Devices
• computer
• businesses
• technology operational
• Cisco IOS
• Determining IP routes
• DETERMINING FLOW
• earth sciences
• Research
• VNU Journal of Science
• scientific research
• field
• grade
• officers
• alternatives
• career
• paths
• success
• new
• Determining the Specificity
• Terms using Compositional
• Contextual Information
• báo cáo khoa học
• mô hình ngôn ngữ
• xử lý ngôn ngữ tự nhiên
• An Unsupervised Model
• Statistically Determining
• Coordinate Phrase Attachment
• ON DETERMINING THE CONSISTENCY
• PARTIAL DESCRIPTIONS OF TREES
• Thomas L
• Cornell
• Determining the placement of German verbs
• English–to–German SMT
• Anita Gojun Alexander
• model language
• process natural language
• An Efficient Method
• Determining Bilingual Word Classes
• Franz Josef Och
• Determining Word Sense
• Dominance Using a Thesaurus
• Saif Mohammad and Graeme Hirst
• Determining Term Subjectivity
• Term Orientation
• Opinion Mining
• Routing introduction
• Dynamic route comparison
• Static route configuration
• Default route forwarding configuration
• Dynamic routing protocol
• Methodology of determining effective porosity
• Longitudinal dispersivity of aquifer
• The application to field tracer injection test in Southern Hanoi
• The groundwater flow
• Taxation for decision makers
• Decision makers
• The tax practice environment
• Determining gross income
• Property acquisitions
• Cost recovery deductions
• Property dispositions
• Determining system requirements
• Business system development
• Information systems
• Information systems analysis
• Application software
• Systems development