The above article documents the efforts of The Japan Atomic Energy Agency in neutron spectra measurements. However, their focus was on ITER-TBM simulating Assemblies. The TBM put forward by the Japan Atomic Energy Agency resembles a water cooled solid breeder. The breeder is made up of beryllium and lithium ceramics. The professionals made use of Multi-Foil activation technique in achieving their objectives for the research. The neutron spectra in beryllium were determined in this research. This was achieved by the use of an unfolding code, NEUPAC. The preceding calculations were performed with the Monte Carlo code MCNP4C 1 (Kentaro et al 2). A source of literature (FENDL) provided the nuclear data. JENDL Dosimetry file 99 was mainly used as the response values. The file was useful for the reaction rates.
The deducing of the neutron flux spectra was done for both the simulated assemblies and the Multi-Foil Activation technique (MFAM) 1 (Kentaro et al 3).Based on the experiments, it was established that the MFAM produced credible results. The researchers also concluded that MFAM was the ultimate hope for the use of neutron spectrum quantification in ITER-TBM. This was because the researchers realized that MFAM, similar to TBM, was easily flexible and useful in high temperature conditions and areas with strong magnetic fields. Nevertheless, the experiment revealed certain limitations associated with the MFAM. It was discovered that Multi Foil Activation Method had difficulties in quantification of the slow neutron that is at a value below ten eV. Therefore, it was concluded that improves are necessary for the method to produce better results.
Measurement of 14 MeV Neutron Flux from D-T Neutron Generator Using Activation Analysis
The activation method was used in the measuring of the flux of an accelerator made using the D-T neutron generator. It has the ability to generate a neutron at the rate of 1.9 * 1010 neutron per sec. Monitoring the acceleration voltage and the beam current helps in keeping the neutron yield under check. The article will explore quantification of the 14MeV neutron flux through the activation of 63Cu and 27 Al. The method discussed in this article can be utilized as a testing tool. The method can diagnose measurement of great-energy neutron flux. Period integration neutron flux has been established before using the activation technique. The technique has also been utilized in relatively greater intensity neutron origins using spallation reactions 2 (Shrichand, Rao, and Das 2). Experiments have shown that this technique is safe from a number of damages. The damages might include but not limited to mechanical, radiation, or electrical interference.
Works Cited
1Kentaro Ochiai, Yosuke Tatebe, Keitaro Kondo, Seiki Ohnishi, Satoshi Sato, Kosuke Takakura, and Chikara Konno. Nuclear Science and Technology. Neutron Flux Measurements in ITER-TBM Simulating Assemblies by means of Multi-Foil Activation Method. Japan Atomic Energy Agency: Tokai, Vol. 1, p.142-145 (2011).
1Shrichand Jakhar, Chandan Venkata Srinivasa Rao, and Basanta Kumar Das. Nuclear Science Symposium Conference Record. Measurement of 14 MeV Neutron Flux from D-T Neutron Generator Using Activation Analysis. ResearchGate: San Francisco, N30-248, (2008).
