JAEA-Conf 2011-002 - 日本原子力研究開発機構

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Fig.9 Spectrum of gamma-ray following Tc-104 decay Starting from feeding to the high-energy range Fig.11 Spectrum of the Gamma-ray of Nb-101composed of the present calculation and high-resolution data Fig.13 Spectrum of the Gamma-ray of Tc-105 composed of the present calculation and high-resolution data JAEA-Conf 2011-002 Fig.8 Spectrum of gamma-ray following Tc-104 decay Fig.14 Spectrum of the Gamma-ray of Tc-106 composed Starting from feeding to the whole energy range Fig.10 Spectrum of the Gamma-ray of Tc-104 composed of the present calculation and high-resolution data Fig.12 Spectrum of the Gamma-ray of Mo-105 composed of the present calculation and high-resolution data of the present calculation and high-resolution data
JAEA-Conf 2011-002 4. Discussion Figure 8 shows the -ray spectrum calculated from the -feedings obtained by the TAGS measurement and a continuous -ray cascade model mentioned in the preceeding chapter. The -feedings go into the energy bins with fixed-width and, then, the-ray spectrum based on the TAGS results do not show any suructure and the resultant -ray spectrum becomes a single peaked broad distribution as seen here. Figure 9 shows the calculated -ray spectrum originating from the -feeding to the highest energy region where no measurement except for the TAGS gives the feeding, namely, above 4300keV (see Fig3). This calculation is not enough to make a complete -ray energy spectra to be included in JENDL. So existing discrete-line data from ENSDF are also taken into account for the -rays originated from the levels below 4300keV. In this sense we combined existing data and the latest TAGS data to obtain a complete -ray spectrum. Figure 1014 shows the -ray spectrum constructed by combining of the current high resolution data and the TAGS-based calculation as was described above. These results clearly shows us that the part of the spectrum calculated theoretically with the -feedings obtained by TAGS measurement are not discrete. On the other hand, the part of the spectra taken from the current decay schemes has discrete structure. In order to take the balance of both components above into consideration, we need renormalization. This was done in a way to reserve both the E and the E values determined by the TAGS measurement. 5Conclusions The present work is to introduce TAGS data into JENDL. For this purpose, we have to convert the -feedings obtained by TAGS into the energy spectrum of both the -particles and -rays in the ENDF/B format. Only the -ray spectrum is dealt with here for Nb-101, Tc-104,105,106 and Mo-105. The calculation of -ray spectra for Tc-102 and -107 is now underway. Furthermore, the calculation of -ray spectra from the TAGS -feeding is to be carried out. We tried to combine the current high resolution data with the latest TAGS data as far as the -ray spectrum is concerned. By doing this, we aim at advancement in performance of the summation calculation of decay heat by the JENDL decay data file. References [1] R. B. Firestone, V. S. Shirley (Eds.), Table of Isotopes, John Wiley & Sons, New York (1996). [2] ENSDF, http://www.nndc.bnl.gov/ensdf [3] A. Algora et al. Phys Rev. Lett. 105, 202501 (2010) – published Nobenber 08 2010. [4] T. Yoshida, R. Nakashima, J. Nucl. Sc;. Technol., 18[6], 393-407 (1981). [5] A. Algora et al., Int Conf. on Nuclear Data for Sci. Technol., Jeju, Korea (2010). [6] T. Yoshida, J. Katakura, Nucl. Sci. Eng., 93, 193-203 (1986).
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JAEA-Conf 2011-002 Proceedings of t
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JAEA-Conf 2011-002 31. Preliminary
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6.2 Measurement of neutron-induced
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JAEA-Conf 2011-002 Table 1 Comparis
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JAEA-Conf 2011-002 (T1/2=8,900,000
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JAEA-Conf 2011-002 Though words too
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JENDL-3.3 showed better applicabili
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ENDF. Thus this cross section store
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Acknowledgement JAEA-Conf 2011-002
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In the MALIBU program, isotope conc
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some minor actinides. For major act
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JAEA-Conf 2011-002 code MVP-BURN an
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JAEA-Conf 2011-002 [3] Measurements
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3.1 Experimental Set up JAEA-Conf 2
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References JAEA-Conf 2011-002 [1] N
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JAEA-Conf 2011-002 was large. The a
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JAEA-Conf 2011-002 4. Results and D
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Acknowledgments Present study inclu
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Fig. 1 A conceptural picture of the
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4. Theoretical studies Theoretical
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JAEA-Conf 2011-002 Fig.9 Comparison
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Ion source JAEA-Conf 2011-002 LE
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JAEA-Conf 2011-002 3. Readiness
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JAEA-Conf 2011-002
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JAEA-Conf 2011-002 Figure 1. An exa
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JAEA-Conf 2011-002 Figure 6. Compar
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JAEA-Conf 2011-002 calculation of d
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JAEA-Conf 2011-002 equilibrium emis
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JAEA-Conf 2011-002 Cowley et al. [1
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4. Conclusions We have compared nuc
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of MeV region with highest cosmic-r
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JAEA-Conf 2011-002 events can be id
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JAEA-Conf 2011-002 models and its p
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JAEA-Conf 2011-002
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JAEA-Conf 2011-002 xx
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JAEA-Conf 2011-002 1. The recent ac
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JAEA-Conf 2011-002 4. Conceptual de
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The Institute's staff of about 280
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3. Nuclear Theory Laboratory JAEA-C
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JAEA-Conf 2011-002 References [1] P
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JAEA-Conf 2011-002 reaction 6 Li +
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Using the approximated distribution
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momentum of the constituents of P.
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dσ/dΩ (mb/sr) c.m. scattering ang
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JAEA-Conf 2011-002 [2] N. Austern,
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moderating fast neutrons emitted fr
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JAEA-Conf 2011-002 3. Results and d
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JAEA-Conf 2011-002 the detection de
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Fig.1. Experimental arrangement for
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in this work was confirmed. (2) 153
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Neutron Capture Cross Section of 15
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ENDF resonance parameters are based
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sample changer. The measured flux s
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REFERENCES JAEA-Conf 2011-002 [1] W
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JAEA-Conf 2011-002 Fig. 4: The rela
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Fig. 10: The PHITS2 calculation geo
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for such a low energy region should
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MCNPX calculation was performed bas
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JAEA-Conf 2011-002 We measured dou
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1mm-thick carbon target 22mm in dia
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JAEA-Conf 2011-002 Figure 2 shows e
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The double-differential (n,xp) and
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JAEA-Conf 2011-002 forward angles.
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Fig.3. Two-dimensional plot of PI v
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JAEA-Conf 2011-002 Fig. 7. Deuteron
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JAEA-Conf 2011-002 The new detector
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JAEA-Conf 2011-002
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JAEA-Conf 2011-002 - 日本原子力研究開発機構

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