a high abundance 98 The preparation method of tc
A high-abundance, 98tc technology, applied in radiation conversion of chemical elements, recovery of specific isotopes, nuclear engineering, etc., can solve the problems of no high-purity diluent preparation research, unsatisfactory, no stable isotopes, etc.
Inactive Publication Date: 2020-09-29
SICHUAN UNIV
View PDF7 Cites 0 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
The application of this method must have a suitable isotope as a diluent. Since Tc has no stable isotope, its half-life is 4.2×10 6 radioactive isotope 98 Tc becomes 99 An ideal isotope diluent for Tc analysis, and as a radioactive isotope that does not exist in nature, 98 Tc can only be produced artificially
for high abundance 98 There are few reports on the production and preparation of Tc diluents, and it has been reported that deuterium beams ( 2 H) Bombardment of natural molybdenum metal target produced the abundance of 48.28% 98 Tc diluent, but this abundance is not yet sufficient for isotope dilution mass spectrometry 99 Tc requirements
There is still a small amount of literature mainly research generated 98 Tc-related nuclear physical properties, no research on the preparation of high-purity diluents
Method used
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View moreImage
Smart Image Click on the blue labels to locate them in the text.
Smart ImageViewing Examples
Examples
Experimental program
Comparison scheme
Effect test
Embodiment Construction
[0022] The following are more specific preparations for high-abundance 98 Embodiment of Tc Diluent.
[0023] Through nuclear reaction threshold energies and activation functions of related reactions, see figure 1 , figure 2 As shown, in order to obtain a higher yield, at the same time, according to the performance index of the CS-30 cyclotron used in this example, the selected incident proton energy is 9.4MeV, which not only meets the calculated energy range but also can obtain Higher cross section of response.
[0024] Commercially available enriched isotopes for irradiation 98 Mo (98.6%) metal powder is sintered into flakes by SPS, and then welded to the copper substrate by solder. In order to obtain micrograms of 98 Tc, the proton beam current used in this example is 100μA, the irradiation time is 40 hours, and the target is not broken down by bombardment.
[0025] The irradiated target was treated with 30% H 2 o 2 The solution was dissolved, and then basified with...
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More PUM
Login to View More Abstract
The present invention relates to a high abundance 98 The preparation method of Tc is to use charged particles to irradiate the target in a cyclotron to undergo a nuclear reaction, and then separate the irradiated target through radiochemical separation to analyze the nuclear reaction product. 98 Tc for purification. The method of the present invention utilizes the difference between the threshold energy of the target reaction and the side reaction to produce a radioactive nucleus whose abundance and radionuclear purity are both higher than 99%. 98 Tc products, filled with high abundance 98 Blank prepared with Tc diluent.
Description
technical field [0001] The invention relates to the technical field of radioisotope production and preparation, in particular to a high-abundance 98 The preparation method of Tc, a proton ( 1 H) Irradiation 98 Preparation of high-abundance radionuclides from Mo targets 98 Tc's method. Background technique [0002] Tc is an artificial nuclide whose isotope 99 Tc(T 1 / 2 =2.11×10 5 year) as 238 U Spontaneous Fission and Reactor Neutron Initiation 235 A major fission product of U fission (fission yield > 6%), along with nuclear weapons testing, reactor nuclear fuel cycle and 99m The application of Tc in nuclear medicine diagnosis. Due to its high yield, long half-life, and strong migration ability, it has attracted widespread attention. 99 The analysis and detection of Tc is of great significance to the research of environmental safety, nuclear weapons forensics, and nuclide migration. [0003] 99 The content of Tc in environmental samples is extremely low, so trac...
Claims
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More Application Information
Patent Timeline
Login to View More Patent Type & Authority Patents(China)
IPC IPC(8): G21G1/00
CPCG21G1/001G21G2001/0042
Inventor 杨远友刘宁胡映江廖家莉杨吉军
Owner SICHUAN UNIV