ENTRY 10378 20131029 13941037800000001 SUBENT 10378001 20131029 13941037800100001 BIB 14 52 1037800100002 INSTITUTE (1USAANL) 1037800100003 REFERENCE (J,ZP,268,359,197407) 1037800100004 AUTHOR (W.P.Poenitz) 1037800100005 TITLE Measurements of the 6Li(n,alpha)T Cross Section in the 1037800100006 keV Energy Range 1037800100007 FACILITY (DYNAM) Tandem Dynamitron 1037800100008 INC-SPECT Uncertainty in energy determination estimated to be 1037800100009 +- 3 keV. 1037800100010 SAMPLE Metallic lithium on 0.025-cm tantalum backing. 1037800100011 Target thicknesses 6-24 keV. 1037800100012 METHOD (TOF) Time-of-flight measurements over 50-180 cm paths 1037800100013 for alpha detectors and 220-430 cm for neutron 1037800100014 detectors. 1037800100015 DETECTOR (GLASD) Lithium glass detector for alpha detection. 1037800100016 Neutron flux monitored by 3 different detectors: 1037800100017 . Majority of measurements made using Grey Neutron 1037800100018 Detector, water and vanadium sulfate used as 1037800100019 moderators and neutron-to-gamma converters. 1037800100020 . Black neutron detector, used for some measurements 1037800100021 above 500 keV, consisting of cylindrical plastic 1037800100022 scintillator viewed by 5 photomultipliers. 1037800100023 . Long Counter used for some measurements in the 1037800100024 energy range 200-270 keV. 1037800100025 MONITOR Normalized to absolute measurements made with a 1037800100026 vanadium bath calibrated with 252Cf sources. 1037800100027 CORRECTION Corrected for: 1037800100028 . detector efficiencies, 1037800100029 . attenuation of neutron beam in lithium glass (8%), 1037800100030 and in air between lithium glass and neutron 1037800100031 detectors (<8%), 1037800100032 . second neutron group from Li(p,n) (0-12%), 1037800100033 . inscattering (<1.5%), 1037800100034 . energy dependent transmission through collimator 1037800100035 walls, for measurements using a 2nd collimator 1037800100036 between lithium glass and neutron detectors, 1037800100037 (0.6-1.1%), 1037800100038 . averaging caused by energy spread of neutron beam, 1037800100039 for values measured at peak of resonance, (<1.1%). 1037800100040 ERR-ANALYS (DATA-ERR) Main contributions to error: 1037800100041 (ERR-S,1.5,4.2) statistical and count rate 1037800100042 determination (1.5-4.2%), 1037800100043 (ERR-1,0.5,3.0) corrections (0.5-3.0%), 1037800100044 (ERR-2) amount of 6Li in glass (1.5%), 1037800100045 (ERR-3) neutron detector calibration and efficiencies 1037800100046 (2.0%). 1037800100047 STATUS (APRVD) Approved by author 1037800100048 Data taken from tables in reference. 1037800100049 HISTORY (19740510C) 1037800100050 (19750902A) REFERENCE changed 1037800100051 (19830425A) Converted to REACTION formalism 1037800100052 (20021206A) Converted to new date formats, lower case. 1037800100053 (20131027A) OS. ERR-ANALYS updated, correction in sub.31037800100054 ENDBIB 52 0 1037800100055 COMMON 2 3 1037800100056 ERR-2 ERR-3 1037800100057 PER-CENT PER-CENT 1037800100058 1.5 2.0 1037800100059 ENDCOMMON 3 0 1037800100060 ENDSUBENT 59 0 1037800199999 SUBENT 10378002 20021206 00001037800200001 BIB 2 2 1037800200002 REACTION (3-LI-6(N,T)2-HE-4,,SIG) 1037800200003 PART-DET (A) Alphas 1037800200004 ENDBIB 2 0 1037800200005 NOCOMMON 0 0 1037800200006 DATA 4 67 1037800200007 EN EN-RSL DATA DATA-ERR 1037800200008 KEV KEV B B 1037800200009 91. 7. 0.624 0.019 1037800200010 94. 7. 0.653 0.029 1037800200011 99. 8. 0.617 0.023 1037800200012 106. 7. 0.707 0.026 1037800200013 118. 7. 0.695 0.026 1037800200014 119. 8. 0.716 0.026 1037800200015 124. 7. 0.720 0.027 1037800200016 137. 7. 0.788 0.028 1037800200017 141. 6. 0.828 0.025 1037800200018 148. 7. 0.886 0.031 1037800200019 153. 7. 0.901 0.028 1037800200020 157. 7. 0.970 0.034 1037800200021 162. 6. 1.047 0.031 1037800200022 166. 7. 1.026 0.038 1037800200023 194. 6. 1.603 0.048 1037800200024 194. 7. 1.668 0.053 1037800200025 197. 7. 1.576 0.063 1037800200026 201. 8. 1.920 0.086 1037800200027 212. 6. 2.109 0.063 1037800200028 222. 6. 2.492 0.051 1037800200029 225. 7. 2.694 0.084 1037800200030 232. 6. 2.734 0.081 1037800200031 238. 7. 3.010 0.090 1037800200032 238. 6. 2.865 0.086 1037800200033 242. 6. 2.925 0.088 1037800200034 247. 8. 3.031 0.133 1037800200035 249. 6. 2.925 0.087 1037800200036 250. 7. 2.804 0.115 1037800200037 253. 6. 2.804 0.084 1037800200038 263. 6. 2.716 0.084 1037800200039 265. 7. 2.564 0.079 1037800200040 275. 6. 2.443 0.076 1037800200041 295. 7. 1.966 0.069 1037800200042 296. 7. 1.522 0.064 1037800200043 298. 8. 1.553 0.078 1037800200044 347. 7. 0.745 0.033 1037800200045 389. 7. 0.643 0.028 1037800200046 390. 7. 0.599 0.020 1037800200047 398. 7. 0.589 0.026 1037800200048 398. 13. 0.639 0.026 1037800200049 407. 7. 0.540 0.022 1037800200050 417. 7. 0.538 0.024 1037800200051 428. 6. 0.448 0.022 1037800200052 439. 6. 0.458 0.023 1037800200053 467. 6. 0.400 0.016 1037800200054 491. 24. 0.404 0.016 1037800200055 499. 6. 0.400 0.014 1037800200056 499. 6. 0.400 0.013 1037800200057 503. 21. 0.388 0.013 1037800200058 508. 6. 0.390 0.012 1037800200059 547. 6. 0.378 0.012 1037800200060 552. 21. 0.362 0.011 1037800200061 595. 23. 0.317 0.013 1037800200062 597. 6. 0.325 0.011 1037800200063 600. 21. 0.349 0.011 1037800200064 653. 20. 0.320 0.011 1037800200065 699. 6. 0.292 0.010 1037800200066 704. 20. 0.294 0.011 1037800200067 751. 19. 0.288 0.010 1037800200068 798. 6. 0.256 0.009 1037800200069 805. 19. 0.277 0.011 1037800200070 904. 19. 0.248 0.011 1037800200071 999. 6. 0.267 0.010 1037800200072 1007. 18. 0.228 0.010 1037800200073 1108. 18. 0.234 0.009 1037800200074 1308. 17. 0.219 0.009 1037800200075 1500. 17. 0.284 0.014 1037800200076 ENDDATA 69 0 1037800200077 ENDSUBENT 76 0 1037800299999 SUBENT 10378003 20131029 13941037800300001 BIB 3 8 1037800300002 REACTION 1(3-LI-6(N,0),,EN) 1037800300003 2(3-LI-6(N,0),,J) 1037800300004 3(3-LI-6(N,0),,L) 1037800300005 4(3-LI-6(N,EL),,WID/RED,,RMT) 1037800300006 5(3-LI-6(N,T),,WID/RED,,RMT) 1037800300007 STATUS (TABLE) Table 2 of Z.Phys.268(1974)359 1037800300008 HISTORY (19781103C) 1037800300009 (20131027A) SF3 in REACTION 5 changed from A to T 1037800300010 ENDBIB 8 0 1037800300011 NOCOMMON 0 0 1037800300012 DATA 5 4 1037800300013 DATA 1DATA 2DATA 3DATA 4DATA 5 1037800300014 KEV NO-DIM NO-DIM KEV KEV 1037800300015 -820. 0.5 0. 310. 1400. 1037800300016 251. 2.5 1. 532. 141. 1037800300017 3268. 1.5 1. 1800. 220. 1037800300018 3548. 1.5 0. 1700. 276. 1037800300019 ENDDATA 6 0 1037800300020 ENDSUBENT 19 0 1037800399999 ENDENTRY 3 0 1037899999999