ENTRY 21437 20170805 22632143700000001 SUBENT 21437001 20170805 22632143700100001 BIB 13 59 2143700100002 TITLE The elastic scattering of 350 MeV neutrons by complex 2143700100003 nuclei 2143700100004 AUTHOR (A.Ashmore,D.S.Mather,S.K.Sen) 2143700100005 INSTITUTE (2UK LVP) 2143700100006 REFERENCE (J,PPS,71,552,1958) 2143700100007 REL-REF (O,21680001,A.Ashmore+,J,PPS/A,70,745,1957) - 2143700100008 total cr.sect. 2143700100009 FACILITY (CYCLO,2UK LVP) 2143700100010 INC-SOURCE (P-BE) Proton beam of cyclotron strikes beryllium 2143700100011 target, 1 in. Long in the direction of the p-beam, 2143700100012 and 0.25 in. High. 2143700100013 SAMPLE .Accurately machined cylinders of graphite, Al, Cu, Sn 2143700100014 and Pb. Length chosen so that approximately 10% 2143700100015 of the incoming neutrons are scattered. Diam. chosen 2143700100016 so that surface is infinite for multiple scattering 2143700100017 correction calculations. Surface densities known to 2143700100018 better than 0.1%. Impurity less than 0.1%. 2143700100019 METHOD (ASSOP) Scattered neutrons detected by converting them 2143700100020 with polyethylene to recoil protons. 2143700100021 DETECTOR (TELES,SCIN,SCIN) Triple coincidence scintillation 2143700100022 counter telescope, with a copper absorber between the 2143700100023 last two counters to set the energy threshold. A 4th 2143700100024 anticoincidence counter was placed in front of the 2143700100025 polyethylene converter to eliminate counts due to 2143700100026 charged particles ejected from the scatterer. 2143700100027 Different arrangements are used (at 10 degr. to the 2143700100028 direction of the scattered neutrons for the small 2143700100029 angle scattering measurements, and at 0 degr. For 2143700100030 the large angle scattering measurements.) 2143700100031 All scintillators from polystyrene containing 2143700100032 tetraphenyl butadiene. Thickness Cu-absorber 2143700100033 78.8 mg/cm2 in small angle scattering arrangement and 2143700100034 84 mg/cm2 in the large angle scattering arrangement 2143700100035 (TELES,SCIN,SCIN) double coincidence scintillation 2143700100036 counter telescope, with a copper absorber of the same 2143700100037 thickness as in the small angle scattering arrange- 2143700100038 ment. 2143700100039 Dimensions of the scintillators and polythene 2143700100040 converters (in.) : 2143700100041 N Thickness Diameter Width Height 2143700100042 1 0.25 2.375 (LAS) 1.25(SAD) 2.375 (SAD) 2143700100043 CH2 1.25 2.25 (LAS) 1.25(SAD) 2.5 (SAD) 2143700100044 2 0.25 2. (LAS) 1. (SAD) 2. (SAD) 2143700100045 3 0.25 2. 2143700100046 4 0.125 5. 2143700100047 M CH2 1.25 2.5 2143700100048 M1 0.25 1. 2143700100049 M2 0.125 1.625 2143700100050 where: LAS - Large Angle Detector; 2143700100051 SAD - Small Angle Detector 2143700100052 M - Monitor. 2143700100053 CORRECTION Correction for double scattering. 2143700100054 Higher orders multiple scattering can be ignored. 2143700100055 ERR-ANALYS (DATA-ERR) No details given. 2143700100056 HISTORY (19800219T) G.C. 2143700100057 (20170805A) SD:Updated to new date formats,lower case. 2143700100058 REACTION code corrected in Subents 002,004-006. 2143700100059 Meaningless zeros were deleted from the data. 2143700100060 REL-REF was added. 2143700100061 ENDBIB 59 0 2143700100062 COMMON 2 3 2143700100063 EN EN-RSL 2143700100064 MEV MEV 2143700100065 351.5 15. 2143700100066 ENDCOMMON 3 0 2143700100067 ENDSUBENT 66 0 2143700199999 SUBENT 21437002 20170805 22632143700200001 BIB 3 3 2143700200002 REACTION (6-C-0(N,EL)6-C-0,,DA) 2143700200003 STATUS (TABLE) Tbl. 4,5 from PPS,71,552,1958 2143700200004 HISTORY (20170805A) SD: SF4=C-0 was added to REACTION code. 2143700200005 ENDBIB 3 0 2143700200006 NOCOMMON 0 0 2143700200007 DATA 3 11 2143700200008 ANG DATA DATA-ERR 2143700200009 ADEG MB/SR MB/SR 2143700200010 0. 0.910 0.115 2143700200011 2. 0.900 0.130 2143700200012 4. 0.835 0.060 2143700200013 6. 0.600 0.060 2143700200014 8. 0.493 0.053 2143700200015 10. 0.277 0.038 2143700200016 12. 0.153 0.031 2143700200017 14. 0.099 0.027 2143700200018 16. 0.091 0.023 2143700200019 18. 0.043 0.019 2143700200020 20. 0.017 0.020 2143700200021 ENDDATA 13 0 2143700200022 ENDSUBENT 21 0 2143700299999 SUBENT 21437003 20170805 22632143700300001 BIB 2 2 2143700300002 REACTION (13-AL-27(N,EL)13-AL-27,,DA) 2143700300003 STATUS (TABLE) Tbl. 4,5 from PPS,71,552,1958 2143700300004 ENDBIB 2 0 2143700300005 NOCOMMON 0 0 2143700300006 DATA 3 9 2143700300007 ANG DATA DATA-ERR 2143700300008 ADEG MB/SR MB/SR 2143700300009 0. 3.79 0.43 2143700300010 2. 3.24 0.39 2143700300011 4. 2.88 0.20 2143700300012 6. 1.78 0.15 2143700300013 8. 0.80 0.12 2143700300014 10. 0.39 0.08 2143700300015 12. 0.15 0.10 2143700300016 14. 0.07 0.08 2143700300017 16. 0.01 0.10 2143700300018 ENDDATA 11 0 2143700300019 ENDSUBENT 18 0 2143700399999 SUBENT 21437004 20170805 22632143700400001 BIB 3 3 2143700400002 REACTION (29-CU-0(N,EL)29-CU-0,,DA) 2143700400003 STATUS (TABLE) Tbl. 4,5 from PPS,71,552,1958 2143700400004 HISTORY (20170805A) SD: SF4=Cu-0 was added to REACTION code. 2143700400005 ENDBIB 3 0 2143700400006 NOCOMMON 0 0 2143700400007 DATA 3 10 2143700400008 ANG DATA DATA-ERR 2143700400009 ADEG MB/SR MB/SR 2143700400010 0. 14.6 1.5 2143700400011 2. 12.0 1.3 2143700400012 3. 11.2 1.0 2143700400013 4. 8.25 0.54 2143700400014 5. 5.58 0.48 2143700400015 6. 2.83 0.38 2143700400016 7. 2.15 0.31 2143700400017 8. 0.93 0.28 2143700400018 9. 0.33 0.23 2143700400019 10. 0.28 0.22 2143700400020 ENDDATA 12 0 2143700400021 ENDSUBENT 20 0 2143700499999 SUBENT 21437005 20170805 22632143700500001 BIB 3 3 2143700500002 REACTION (50-SN-0(N,EL)50-SN-0,,DA) 2143700500003 STATUS (TABLE) Tbl. 4,5 from PPS,71,552,1958 2143700500004 HISTORY (20170805A) SD: SF4=Sn-0 was added to REACTION code. 2143700500005 ENDBIB 3 0 2143700500006 NOCOMMON 0 0 2143700500007 DATA 3 9 2143700500008 ANG DATA DATA-ERR 2143700500009 ADEG MB/SR MB/SR 2143700500010 0. 37.4 3.3 2143700500011 1.25 34.1 3.7 2143700500012 2. 29.8 2.4 2143700500013 3. 22.4 1.9 2143700500014 4. 15.5 0.8 2143700500015 5. 7.8 0.55 2143700500016 6. 3.5 0.45 2143700500017 7. 1.4 0.30 2143700500018 8. -0.8 0.40 2143700500019 ENDDATA 11 0 2143700500020 ENDSUBENT 19 0 2143700599999 SUBENT 21437006 20170805 22632143700600001 BIB 3 3 2143700600002 REACTION (82-PB-0(N,EL)82-PB-0,,DA) 2143700600003 STATUS (TABLE) Tbl. 4,5 from PPS,71,552,1958 2143700600004 HISTORY (20170805A) SD: SF4=Pb-0 was added to REACTION code. 2143700600005 ENDBIB 3 0 2143700600006 NOCOMMON 0 0 2143700600007 DATA 3 8 2143700600008 ANG DATA DATA-ERR 2143700600009 ADEG MB/SR MB/SR 2143700600010 0. 91.8 6.0 2143700600011 1.25 80.8 6.4 2143700600012 2. 70.9 5.1 2143700600013 3. 39.5 3.2 2143700600014 4. 21.5 1.15 2143700600015 5. 7.1 0.85 2143700600016 6. 1.55 0.7 2143700600017 8. 0.35 0.8 2143700600018 ENDDATA 10 0 2143700600019 ENDSUBENT 18 0 2143700699999 ENDENTRY 6 0 2143799999999