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¡¡¤³¤ì¤é¤Î²áÄø¤Ïintranuclear cascade ÌÏ·¿¤Èinternuclear cascade ÌÏ·¿¤Ë¤è¤Ã¤Æµ½Ò¤µ¤ì¤ë¡£¤³¤ì¤é¤ÎÌÏ·¿¤Ë¤Ä¤¤¤Æ¤Ï¥ê¥¨¡¼¥¸¥åÂç³Ø¤ÎJ.Cugnon¤é¤Î¹Í»¡¤¬¤¢¤ë¡£¤³¤Î¤è¤¦¤ÊÌÏ·¿¤ò¸¡¾Ú¤¹¤ë¤¿¤á¤Ë¤Ï¡¢Æþ¼Íγ»ÒÅö¤¿¤ê¤ËÊü½Ð¤µ¤ì¤ëÃæÀ»Ò¤ÎÊ¿¶Ñ¤Î¿ô¤òÄ´¤Ù¤ë¤À¤±¤Ç¤Ï¤Ê¤¯¡¢ÃæÀ»Ò¿½ÅÅÙʬÉÛ¤òÄ´¤Ù¤ëɬÍפ¬¤¢¤ë¡£¥±¥ó¥È½£Î©Âç³Ø¤ÎF.M. Waterman¤é¤ÏLBL(Lawrence Berkeley Laboratory)¤Î184¥¤¥ó¥Á ¥µ¥¤¥¯¥í¥È¥í¥ó¤òÍѤ¤¤Æ724MeV¤ÎÍÛ»Ò¤òBe¤È Cu¤ËÆþ¼Í¤µ¤»¡¢0¡¬¤Ç¤ÎÃæÀ»Ò¥¹¥Ú¥¯¥È¥ë¤ò¬Äꤷ¤Æ¡¢intranuclear cascade ÌÏ·¿¤È¤ÎÈæ³Ó¤ò¹Ô¤Ã¤¿¡£¿Þ1¤Ë¼Â¸³¤ÇÆÀ¤é¤ì¤¿ÃæÀ»Ò¥¹¥Ú¥¯¥È¥ë¤ÈÌÏ·¿¤Ë¤è¤ë·×»»·ë²Ì¤È¤ÎÈæ³Ó¤ò¼¨¤¹¡£

¿Þ1¡¡Measured spectrum of neutrons emitted at 0¡¬from 724-MeV proton bombardment of copper. The histogram is the spectrum predicted by the intranuclear cascade model for secondary neutrons emitted in the angular interval from 0 to 5¡¬. The measured spectrum is normalized to the predicted cross section above 200 MeV. ¡Ê¸¶ÏÀʸ1¤è¤ê°úÍÑ¡£¡¡Reproduced, with permission, from F.W.Waterman, R.Madey, Phys. Rev., C, vol.8, 2419 (1973), Figure 6 (Data source 1, pp.2423), Copyright (1973) by the American Physical Society.¡Ë
¡¡¥Ï¡¼¥ó¥Þ¥¤¥È¥Ê¡¼¸¦µæ½ê¤ÎL.Pienkowski¤é¤Ï¡¢Ä¾·Â8-15cm¤Ç¡¢Ä¹¤µ0.2-40cm¤Î±ßÃì¾õ¤ÎPb, Ag, Ho, Au,¡¡Îô²½¥¦¥é¥ó¥¿¡¼¥²¥Ã¥È¤Ë2-5GeV¤ÎÍÛ»Ò¡¢È¿ÍÛ»Ò¡¢¦ÐÃæ´Ö»Ò¡¢½ÅÍÛ»ÒÅù¤òÆþ¼Í¤µ¤»¤Æ³ËÇ˺ÕÈ¿±þ¤ÎÃæÀ»Ò¿½ÅÅÙʬÉÛ¤ò¬Äꤷ¤¿¡£Æþ¼Íγ»Ò¤ÎȯÀ¸¤Ë¤ÏCERN-PS(proton synchrotron)¤«¤é¤Î26GeV¤ÎÍÛ»Ò¤ÈLEAR/CERN(low energy antiproton ring)¤«¤é¤ÎÍÛ»Ò¤ò»ÈÍѤ·¡¢4¦Ð ÃæÀ»Ò¸¡½Ð´ï BNB (Berlin Neutron Ball)¤òÍѤ¤¤ÆÃæÀ»Ò¤Î¬Äê¤ò¹Ô¤Ã¤¿¡£
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¿Þ2¡¡Measured neutron multiplicity distributions for p+U. The depleted U target was 40 cm long with a diameter of 8 cm. At 3.17 and 4.15 GeV the U bar was surrounded by a 38 cm long lead cylinder with an inner and outer diameter of 8 and 15 cm, respectively. The solid lines are fits with a Gaussian distribution, the parameters are given in Table I. ¡Ê¸¶ÏÀʸ2¤è¤ê°úÍÑ¡£¡¡Reproduced, with permission, from L.Pienkowski et al., Phys. Rev., C, vol.56, 1909 (1997), Figure 3 (Data source 2, pp.1912), Copyright (1997) by the American Physical Society.¡Ë
¡¡¿Þ3¤ÏPb¥¿¡¼¥²¥Ã¥È¤Ë³Æ¼ïγ»Ò¤¬Æþ¼Í¤·¤¿¤È¤¤ÎÊ¿¶ÑÃæÀ»Ò¿½ÅÅ٤Ǥ¢¤ë¡£4.15GeV¤ÎÍÛ»Ò¤¬1¸ÄPb¥¿¡¼¥²¥Ã¥È¤ËÆþ¼Í¤¹¤ë¤ÈÌó60¸Ä¤ÎÃæÀ»Ò¤¬È¯À¸¤¹¤ëÍͻҤ¬¤ï¤«¤ë¡£

¿Þ3¡¡Mean neutron multiplicity < Mn > for incident protons p+, pions ¦Ð¡Þ, deuterons d+, and antiprotons p- as a function of incident kinetic energy on a 35 cm long lead target with a diameter of 15 cm. The mean neutron multiplicity has been corrected for a mean efficiency of ¦Å=0.85. The curves connect the data points. For antiprotons p- the smaller filled squares are plotted also at the available incident energy, see text. The filled and open triangles display < Mn > and Mnmax, respectively, for thin (2 to 5 mm) Pb targets. The dashed vertical bars at the open triangles indicate the widths ¦Ò of the Gaussian fit. ¡Ê¸¶ÏÀʸ2¤è¤ê°úÍÑ¡£¡¡Reproduced, with permission, from L.Pienkowski et al., Phys. Rev. C, vol.56, 1909 (1997), Figure 7 (Data source 2, pp.741), Copyright (1997) by the American Physical Society.¡Ë
¡¡³ËÇ˺ÕÃæÀ»Ò¸»¤ò͸ú¤ËÍøÍѤ¹¤ë°ì¤Ä¤ÎÎã¤È¤·¤Æ¡¢¥í¥¹¥¢¥é¥â¥¹¹ñΩ¸¦µæ½ê¤ÎC.D.Bowman¤é¤Ï¡¢²Ã®´ï¤Çºî¤é¤ì¤¿1016n/(cm2 s )ÄøÅÙ¤ÎÇ®ÃæÀ»Ò«¤ò»È¤Ã¤¿232Th¤Þ¤¿¤Ï238U¤«¤é¤Î³Ë¥¨¥Í¥ë¥®¡¼¤ÎȯÀ¸¤È¹â¥¢¥¯¥Á¥Ê¥¤¥ÉÊü¼ÍÀÇÑ´þʪ¤Î³ËÊÑ´¹¤Î¿·¤·¤¤ÊýË¡¤Ë¤Ä¤¤¤ÆÄ󰯤·¤Æ¤¤¤ë¡£232Th¤Ï¿ô1000ǯ¤Ë¤ï¤¿¤ëÀ¤³¦¤Î¥¨¥Í¥ë¥®¡¼¼ûÍפ˹礦½¼Ê¬¤ÊÎ̤¬¤¢¤ë³ËdzÎÁ¤Ç¤¢¤ë¡£Ä¹¤¤È¾¸º´ü¤Î¹â¥ì¥Ù¥ëÊü¼ÍÀÇÑ´þʪ¤Î½Ð¤Ê¤¤¾¦¶ÈŪ³Ë¥¨¥Í¥ë¥®¡¼¤ÎȯÀ¸¤ÈÂç·¿Ç®ÃæÀ»Òϧ¤Ç¸½ºßÆÀ¤é¤ì¤ëŵ·¿Åª¤ÊÃͤÎÌó100Çܤζ¯ÅÙ¤ÎÃæÀ»Ò«¤Ï¡¢ºÇ¶á¤ÎÍۻҥ饤¥Ê¥Ã¥¯µ»½Ñ¤Î¿ÊŸ¤È³ËÇ˺ե¿¡¼¥²¥Ã¥È¥â¥Ç¥ì¡¼¥¿¡¼¤ÎÀ߷פˤè¤Ã¤Æ¸½¼Â¤Î¤â¤Î¤È¤Ê¤Ã¤¿¡£¤³¤ÎÊý¼°¤Ç¤Ï²Ã®´ï¤¬Î׳¦°Ê²¼¤Ç¤Î·Ï¤Î±¿Å¾¤ò²Äǽ¤Ë¤¹¤ë¤Î¤ÇÎ׳¦»ö¸Î¤Îµ¯¤³¤ë¤³¤È¤Ï¤Ê¤¯¡¢À©¸æËÀ¤âÉÔÍפǤ¢¤ë¡£¥¨¥Í¥ë¥®¡¼È¯À¸¤ÈÊü¼ÍÀÇÑ´þʪ ³ËÊÑ´¹¤Î¤³¤Î¿·¤·¤¤ÊýË¡¤ò¾å¼ê¤Ë¿Ê¤á¤Æ¹Ô¤±¤Ð¡¢ÃϼÁǯÂåŪ¤Ê»þ´Ö¼ÜÅÙ¤ÎÊü¼ÍÀÇÑ´þʪ¤ÎÃù¢¤ÎɬÍ×À¤â̵¤¯¤Ê¤ê¡¢Ä¹¤¤È¾¸º´ü¤Î¹â¥ì¥Ù¥ëÊü¼ÍÀÇÑ´þʪ¤Ê¤·¤Ë¾¦¶ÈŪ¤Ê³Ë¥¨¥Í¥ë¥®¡¼È¯À¸¤¬²Äǽ¤Ç¤¢¤ë¤È½Ò¤Ù¤é¤ì¤Æ¤¤¤ë¡£
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¸¶ÏÀʸ£± Data source 1¡§
Neutron Spectra at 0¡¬from 724-MeV Protons on Be and Cu
F.M.Waterman and R.Madey
Department of Physics, Kent State University, Kent, Ohio 44242
Physical Review, C, vol.8 (1973) 2419-2424
¸¶ÏÀʸ£² Data source 2¡§
Neutron multiplicity distributions for 1.94 to 5 GeV/c proton-, antiproton-, pion-, kaon-, and deuteron-induced spallation reactions on thin and thick targets
L.Pienkowski, F.Goldenbaum, D.Hilscher, U.Jahnke, J.Galin*) and B. Lott*)
Hahn-Meitner-Institut Berlin, Glienickerstrasse 100, D-14109 Berlin, Germany: *)GANIL (IN2P3-CNRS, DSM-CEA), BP 5027, F-14021 Caen-Cedex, France
Physical Review, C, vol.56 (1997) 1909-1917
¸¶ÏÀʸ£³ Data source 3¡§
Nucleon and deuteron induced spallation reactions
J.Cugnon, C.Volant*), S.Vuillier*)
University of Liege, Physics Department, B5, B-4000 Sart-Tilman Liege 1, Belgium; *)CEA DAPNIA/SPhN, CE Saclay, F-91191 Gif-sur-Yvette Cedex, France
Nuclear Physics, A 625 (1997) 729-757
¸¶ÏÀʸ£´ Data source 4¡§
Nuclear energy generation and waste transmutation using an accelerator-driven intense thermal neutron source
C.D.Bowman. E.D.Arthur, P.W.Lisowski, G.P.Lawrence, R.J.Jensen, J.L.Anderson, B.Blind, M.Cappiello, J.W.Davidson, T.R.England, L.N.Engel, R.C.Haight, G.H.Hughes ·, J.R.Ireland, R.A.Krakowski, R.J.LaBauve, B.C.Letellier, R.T.Perry, G.J.Russell, K.P.Staudhammer, G.Versamis and W.B.Wilson
Los Alamos National Laboratory, Los Alamos, NM 87545, U.S.A.
Nuclear Instruments and Methods in Physics Research, A320 (1992) 336-367
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spallation neutron source, neutron, neutron multiplicity distribution, neutron spectrum, transmutation
ʬÎॳ¡¼¥É¡§040101, 040103, 040301
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