ENTRY M0302 20160224 M082M0302 0 1 SUBENT M0302001 20160224 M082M0302 1 1 BIB 17 46 M0302 1 2 TITLE Photoneutrons from K and Ca. M0302 1 3 AUTHOR (V.Emma,C.Milone,R.Rinzivillo) M0302 1 4 INSTITUTE (2ITYCAT) M0302 1 5 REFERENCE (J,NC,14,(5),1149,1959) M0302 1 6 FACILITY (BETAT,2ITYTUR) M0302 1 7 INC-SOURCE (BRST) M0302 1 8 INC-SPECT The diameter of the gamma beam at the place of the M0302 1 9 targets was 35 mm. The doses of gamma-irradiation M0302 1 10 were 3690 roentgen for Ca and 6027 roentgen for K. M0302 1 11 SAMPLE A cylinder of natural Ca (hight = 20 mm, diameter = M0302 1 12 29 mm, weght = 19 g) and a spherical target of M0302 1 13 natural K (diameter = 30 mm, weght = 12 g). M0302 1 14 METHOD (REC) M0302 1 15 PART-DET (P) M0302 1 16 DETECTOR (PLATE) Ilford L4 emulsion (thickness = 400 mu, area M0302 1 17 = 1 x 3 inches). The nuclear plates were screened by M0302 1 18 3 mm thick Pb foils against the low energy photons M0302 1 19 diffused by the target. M0302 1 20 CORRECTION A) for the probability of escape of recoil proton M0302 1 21 tracks from the emulsion, M0302 1 22 B) for the neutron absorption in the target, in the M0302 1 23 window of the vessel containing the K target and in M0302 1 24 Pb foils. M0302 1 25 ERR-ANALYS (ERR-S) Statistical errors are presented. M0302 1 26 ADD-RES (COMP) The evaporation theory was used. The fraction M0302 1 27 of neutrons exceeding the theoretical values at high M0302 1 28 neutron energies is reported. M0302 1 29 COMMENT The spectra show that at least 50% of the neutrons M0302 1 30 above 2 MeV are due to direct process. For Ca and M0302 1 31 also for K a second resonance seems to exist about M0302 1 32 10 MeV above the threshold. At 31 MeV photoneutron M0302 1 33 yields for Ca and K at angle = 90 degrees for E > 2 M0302 1 34 MeV are about the same. M0302 1 35 REL-REF (M,M0310001,G.Cortini+,J,NC,9,85,1958) Description M0302 1 36 of method by means of which the plates were scanned M0302 1 37 and the proton recoil tracks were analysed. M0302 1 38 (O,M0356001,A.Agodi+,C,58PARIS,625,1958) The first M0302 1 39 results on the energy spectrum of photoneutrons of M0302 1 40 Ca. M0302 1 41 (M,M0289001,G.Cortini+,J,NC,14,54,1959). Description M0302 1 42 of the method of theoretical calculations. M0302 1 43 HISTORY (19881227C) Data were compiled at SCJAD of Saratov M0302 1 44 State University. M0302 1 45 (19910202A) Corrected by V.Varlamov, V.Mclane. M0302 1 46 (20160224A) Corrected by SD and VV: dates, STATUS, M0302 1 47 REACTION, lowercase. M0302 1 48 ENDBIB 46 0 M0302 1 49 COMMON 1 3 M0302 1 50 EN-MAX M0302 1 51 MEV M0302 1 52 31.0 M0302 1 53 ENDCOMMON 3 0 M0302 1 54 ENDSUBENT 53 0 M0302 199999 SUBENT M0302002 20160224 M082M0302 2 1 BIB 3 4 M0302 2 2 REACTION (20-CA-0(G,X)0-NN-1,,DA/DE,,BRA/REL) M0302 2 3 STATUS (CURVE) Fig.3 from NC,14,(5),1149,1959. M0302 2 4 HISTORY (20160224A) Corrected by SD and VV: REACTION, BRS -> M0302 2 5 BRA, STATUS. M0302 2 6 ENDBIB 4 0 M0302 2 7 COMMON 1 3 M0302 2 8 ANG M0302 2 9 ADEG M0302 2 10 90.0 M0302 2 11 ENDCOMMON 3 0 M0302 2 12 DATA 4 21 M0302 2 13 E E-ERR DATA ERR-S M0302 2 14 MEV MEV ARB-UNITS ARB-UNITS M0302 2 15 1.75 0.25 35.4 2.7 M0302 2 16 2.25 0.25 34.8 2.7 M0302 2 17 2.75 0.25 26.4 2.5 M0302 2 18 3.25 0.25 33.8 2.6 M0302 2 19 3.75 0.25 27.9 2.5 M0302 2 20 4.25 0.25 24.8 2.5 M0302 2 21 4.75 0.25 17.3 1.5 M0302 2 22 5.25 0.25 14.1 1.4 M0302 2 23 5.75 0.25 11.5 1.3 M0302 2 24 6.25 0.25 10.5 1.4 M0302 2 25 6.75 0.25 7.0 1.2 M0302 2 26 7.25 0.25 4.9 0.8 M0302 2 27 7.75 0.25 6.5 1.2 M0302 2 28 8.25 0.25 6.7 1.2 M0302 2 29 8.75 0.25 5.5 1.1 M0302 2 30 9.25 0.25 5.7 1.4 M0302 2 31 9.75 0.25 7.4 1.9 M0302 2 32 10.50 0.50 3.0 1.4 M0302 2 33 11.50 0.50 1.1 0.9 M0302 2 34 12.50 0.50 0.9 0.9 M0302 2 35 13.50 0.50 1.3 0.8 M0302 2 36 ENDDATA 23 0 M0302 2 37 ENDSUBENT 36 0 M0302 299999 SUBENT M0302003 20160224 M082M0302 3 1 BIB 3 4 M0302 3 2 REACTION (19-K-0(G,X)0-NN-1,,DA/DE,,BRA/REL) M0302 3 3 STATUS (CURVE) Fig.4 from NC,14,(5),1149,1959. M0302 3 4 HISTORY (20160224A) Corrected by SD and VV: REACTION, BRS -> M0302 3 5 BRA, STATUS. M0302 3 6 ENDBIB 4 0 M0302 3 7 COMMON 1 3 M0302 3 8 ANG M0302 3 9 ADEG M0302 3 10 90.0 M0302 3 11 ENDCOMMON 3 0 M0302 3 12 DATA 4 21 M0302 3 13 E E-ERR DATA ERR-S M0302 3 14 MEV MEV ARB-UNITS ARB-UNITS M0302 3 15 1.75 0.25 28.3 2.5 M0302 3 16 2.25 0.25 32.7 3.1 M0302 3 17 2.75 0.25 29.4 2.9 M0302 3 18 3.25 0.25 21.7 2.8 M0302 3 19 3.75 0.25 26.1 3.0 M0302 3 20 4.25 0.25 22.9 3.3 M0302 3 21 4.75 0.25 18.9 3.0 M0302 3 22 5.25 0.25 14.9 2.0 M0302 3 23 5.75 0.25 15.5 2.0 M0302 3 24 6.25 0.25 8.6 1.5 M0302 3 25 6.75 0.25 8.0 1.5 M0302 3 26 7.25 0.25 11.4 1.7 M0302 3 27 7.75 0.25 7.0 1.4 M0302 3 28 8.25 0.25 5.1 1.5 M0302 3 29 8.75 0.25 2.5 1.1 M0302 3 30 9.25 0.25 3.3 1.2 M0302 3 31 9.75 0.25 4.3 1.4 M0302 3 32 10.50 0.50 2.9 0.9 M0302 3 33 11.50 0.50 1.2 0.7 M0302 3 34 12.50 0.50 0.8 0.8 M0302 3 35 13.50 0.50 0.5 0.6 M0302 3 36 ENDDATA 23 0 M0302 3 37 ENDSUBENT 36 0 M0302 399999 SUBENT M0302004 20160224 M082M0302 4 1 BIB 3 4 M0302 4 2 REACTION (19-K-0(G,X)0-NN-1,,DA/DE,,BRA/REL) M0302 4 3 STATUS (CURVE) Fig.5 from NC,14,(5),1149,1959. M0302 4 4 HISTORY (20160224A) Corrected by SD and VV: REACTION, BRS -> M0302 4 5 BRA, STATUS. M0302 4 6 ENDBIB 4 0 M0302 4 7 COMMON 1 3 M0302 4 8 ANG M0302 4 9 ADEG M0302 4 10 60.0 M0302 4 11 ENDCOMMON 3 0 M0302 4 12 DATA 4 10 M0302 4 13 E E-ERR DATA ERR-S M0302 4 14 MEV MEV ARB-UNITS ARB-UNITS M0302 4 15 2.5 0.5 30.7 3.7 M0302 4 16 3.5 0.5 23.8 3.5 M0302 4 17 4.5 0.5 20.5 3.5 M0302 4 18 5.5 0.5 18.1 3.5 M0302 4 19 6.5 0.5 12.0 2.9 M0302 4 20 7.5 0.5 9.7 2.7 M0302 4 21 8.5 0.5 8.5 2.7 M0302 4 22 9.5 0.5 2.3 1.2 M0302 4 23 11.0 1.0 2.5 0.8 M0302 4 24 13.0 1.0 1.5 0.7 M0302 4 25 ENDDATA 12 0 M0302 4 26 ENDSUBENT 25 0 M0302 499999 SUBENT M0302005 20160224 M082M0302 5 1 BIB 3 4 M0302 5 2 REACTION (19-K-0(G,X)0-NN-1,,DA/DE,,BRA/REL) M0302 5 3 STATUS (CURVE) Fig.6 from NC,14,(5),1149,1959. M0302 5 4 HISTORY (20160224A) Corrected by SD and VV: REACTION, BRS -> M0302 5 5 BRA, STATUS. M0302 5 6 ENDBIB 4 0 M0302 5 7 COMMON 1 3 M0302 5 8 ANG M0302 5 9 ADEG M0302 5 10 120.0 M0302 5 11 ENDCOMMON 3 0 M0302 5 12 DATA 4 10 M0302 5 13 E E-ERR DATA ERR-S M0302 5 14 MEV MEV ARB-UNITS ARB-UNITS M0302 5 15 2.5 0.5 29.6 4.4 M0302 5 16 3.5 0.5 29.4 4.8 M0302 5 17 4.5 0.5 19.7 4.3 M0302 5 18 5.5 0.5 15.0 4.0 M0302 5 19 6.5 0.5 7.6 2.5 M0302 5 20 7.5 0.5 7.1 3.2 M0302 5 21 8.5 0.5 5.1 3.0 M0302 5 22 9.5 0.5 7.2 3.8 M0302 5 23 11.0 1.0 3.1 1.3 M0302 5 24 13.0 1.0 2.7 1.3 M0302 5 25 ENDDATA 12 0 M0302 5 26 ENDSUBENT 25 0 M0302 599999 ENDENTRY 5 0 M030299999999