ENTRY F1036 20100520 F040F103600000001 SUBENT F1036001 20100520 F040F103600100001 BIB 11 24 F103600100002 TITLE Energy levels in F-18 from alpha particle reactions in F103600100003 nitrogen. F103600100004 AUTHOR (N.P.Heydenburg,G.M.Temmer) F103600100005 INSTITUTE (1USACAW,1USANBS) F103600100006 REFERENCE (J,PR,92,89,1953) F103600100007 FACILITY (VDG,1USACAW) F103600100008 INC-SOURCE A beam of singly charged helium ions collimated to a F103600100009 circular area of 1 mm diameter entered a scattering F103600100010 chamber through a differential pumping system. F103600100011 DETECTOR (PROPC) A movable proportional counter filled with F103600100012 nitrogen to 7 cm Hg subtended an angle of about two F103600100013 degrees at the scattering volume and was accurately at F103600100014 angles up to 147.5 degr. in the laboratory. A very thinF103600100015 window of Formvar some 6-8 mu-g/cm2 thick allowed us F103600100016 to efficiently detect alpha particles down to about F103600100017 40 keV. F103600100018 METHOD (BCINT) F103600100019 SAMPLE Gas target was used. The scattering gas pressure F103600100020 was kept around 3 mm Hg. The effective target thicknessF103600100021 was of the order of 400 eV and was therefore completelyF103600100022 negligible. F103600100023 ERR-ANALYS (ERR-DIG) Data digitizing error F103600100024 (ERR-S) Statistical error F103600100025 HISTORY (20100520C) F103600100026 ENDBIB 24 0 F103600100027 COMMON 1 3 F103600100028 ERR-S F103600100029 PER-CENT F103600100030 2. F103600100031 ENDCOMMON 3 0 F103600100032 ENDSUBENT 31 0 F103600199999 SUBENT F1036002 20100520 F040F103600200001 BIB 3 4 F103600200002 REACTION (7-N-14(A,EL)7-N-14,,DA,,RTH) F103600200003 ERR-ANALYS (EN-ERR-DIG) Energy digitizing error F103600200004 (DATA-ERR) Error from the graphic bars F103600200005 STATUS (CURVE) Fig.1,2,3 F103600200006 ENDBIB 4 0 F103600200007 COMMON 2 3 F103600200008 EN-ERR-DIG ERR-DIG F103600200009 MEV NO-DIM F103600200010 0.0052 0.0016 F103600200011 ENDCOMMON 3 0 F103600200012 DATA 4 139 F103600200013 ANG-CM EN DATA DATA-ERR F103600200014 ADEG MEV NO-DIM NO-DIM F103600200015 90. 2.5149 0.97966 F103600200016 90. 2.6146 1.0095 F103600200017 90. 2.6632 1.0244 F103600200018 90. 2.7118 0.99485 F103600200019 90. 2.763 0.98754 F103600200020 90. 2.8116 0.97035 F103600200021 90. 2.8627 1.0075 F103600200022 90. 2.9138 1.0323 F103600200023 90. 2.9624 1.0521 F103600200024 90. 3.011 1.0349 F103600200025 90. 3.0621 1.0597 F103600200026 90. 3.1107 1.04 F103600200027 90. 3.1619 1.0475 F103600200028 90. 3.2106 0.98591 F103600200029 90. 3.2592 0.9786 F103600200030 90. 3.3103 0.9861 F103600200031 90. 3.3589 0.98372 F103600200032 125.27 1.5173 1.0679 F103600200033 125.27 1.6145 1.0407 F103600200034 125.27 1.7143 1.0259 F103600200035 125.27 1.814 1.0635 2.24E-02 F103600200036 125.27 1.9112 1.0238 F103600200037 125.27 2.0136 1.0091 F103600200038 125.27 2.1107 1.0118 F103600200039 125.27 2.213 1.0369 F103600200040 125.27 2.3128 1.0072 F103600200041 125.27 2.364 0.9948 F103600200042 125.27 2.4126 0.97994 F103600200043 125.27 2.4637 1.005 F103600200044 125.27 2.5123 1.0175 F103600200045 125.27 2.5583 0.99517 F103600200046 125.27 2.6121 0.95042 F103600200047 125.27 2.7119 0.93815 F103600200048 125.27 2.7605 0.91581 F103600200049 125.27 2.8092 0.88351 F103600200050 125.27 2.858 0.76398 F103600200051 125.27 2.8813 0.65935 F103600200052 125.27 2.9071 0.55722 F103600200053 125.27 2.935 0.67192 F103600200054 125.27 2.9605 0.70436 F103600200055 125.27 2.9859 0.78666 F103600200056 125.27 3.0089 0.7867 F103600200057 125.27 3.0346 0.70451 F103600200058 125.27 3.0553 0.61483 F103600200059 125.27 3.0785 0.50771 F103600200060 125.27 3.1043 0.42053 F103600200061 125.27 3.1297 0.48289 F103600200062 125.27 3.1575 0.65989 F103600200063 125.27 3.1803 0.73968 F103600200064 125.27 3.2083 0.80952 F103600200065 125.27 3.2569 0.84201 F103600200066 125.27 3.308 0.85457 F103600200067 125.27 3.3565 0.89204 F103600200068 125.27 3.4077 0.84978 F103600200069 137.7 1.5192 1.0425 F103600200070 137.7 1.6141 1.0227 F103600200071 137.7 1.7114 1.0279 2.E-02 F103600200072 137.7 1.8114 0.97563 F103600200073 137.7 1.9113 0.98084 F103600200074 137.7 2.0111 1.001 F103600200075 137.7 2.1111 0.98375 F103600200076 137.7 2.2135 0.97897 F103600200077 137.7 2.2622 0.96907 F103600200078 137.7 2.3135 0.94417 F103600200079 137.7 2.3647 0.93928 F103600200080 137.7 2.4134 0.93188 F103600200081 137.7 2.4621 0.95198 F103600200082 137.7 2.5133 0.96209 F103600200083 137.7 2.562 0.92469 F103600200084 137.7 2.6133 0.8898 F103600200085 137.7 2.6646 0.8824 F103600200086 137.7 2.7108 0.845 F103600200087 137.7 2.7595 0.7901 F103600200088 137.7 2.8108 0.76271 F103600200089 137.7 2.8521 0.61529 F103600200090 137.7 2.8599 0.57281 F103600200091 137.7 2.8702 0.54783 F103600200092 137.7 2.8884 0.41287 F103600200093 137.7 2.9064 0.41291 F103600200094 137.7 2.9291 0.56045 F103600200095 137.7 2.9494 0.6405 F103600200096 137.7 2.9698 0.68054 F103600200097 137.7 2.9903 0.67308 F103600200098 137.7 3.0109 0.64062 F103600200099 137.7 3.0289 0.58566 F103600200100 137.7 3.0444 0.56069 F103600200101 137.7 3.0626 0.44073 F103600200102 137.7 3.0858 0.37328 F103600200103 137.7 3.1062 0.40832 F103600200104 137.7 3.1492 0.63591 F103600200105 137.7 3.1922 0.891 F103600200106 137.7 3.2328 1.0686 F103600200107 137.7 3.2737 1.1162 F103600200108 137.7 3.3122 1.0912 F103600200109 137.7 3.3557 1.0863 F103600200110 137.7 3.3916 1.0764 F103600200111 156.3 1.5069 1.0718 F103600200112 156.3 1.7037 1.0692 2.7397E-02 F103600200113 156.3 1.8054 1.0467 F103600200114 156.3 1.9053 1.0516 F103600200115 156.3 2.0072 1.039 F103600200116 156.3 2.1061 1.0066 F103600200117 156.3 2.1554 1.0327 F103600200118 156.3 2.2058 1.0065 F103600200119 156.3 2.2577 1.0326 F103600200120 156.3 2.3031 1.009 F103600200121 156.3 2.354 1.0027 F103600200122 156.3 2.4049 0.99392 F103600200123 156.3 2.4539 1.0076 F103600200124 156.3 2.5033 0.94404 F103600200125 156.3 2.5565 0.92523 F103600200126 156.3 2.6034 0.86171 F103600200127 156.3 2.6541 0.84546 F103600200128 156.3 2.7048 0.8292 F103600200129 156.3 2.7561 0.74065 F103600200130 156.3 2.801 0.60491 F103600200131 156.3 2.8496 0.41424 F103600200132 156.3 2.8735 0.35381 F103600200133 156.3 2.8979 0.40303 F103600200134 156.3 2.9242 0.7164 F103600200135 156.3 2.9494 0.798 F103600200136 156.3 2.9761 0.74497 F103600200137 156.3 2.9991 0.64967 F103600200138 156.3 3.024 0.43469 F103600200139 156.3 3.0488 0.31192 F103600200140 156.3 3.0722 0.32628 F103600200141 156.3 3.0993 0.66455 F103600200142 156.3 3.1238 1.0029 F103600200143 156.3 3.1531 1.6153 F103600200144 156.3 3.182 1.7391 F103600200145 156.3 3.2043 1.7136 F103600200146 156.3 3.2308 1.7478 F103600200147 156.3 3.2552 1.7024 F103600200148 156.3 3.2792 1.6444 F103600200149 156.3 3.3047 1.736 F103600200150 156.3 3.3557 1.635 F103600200151 156.3 3.4027 1.5764 F103600200152 156.3 3.4557 1.5527 F103600200153 156.3 3.5038 1.534 F103600200154 ENDDATA 141 0 F103600200155 ENDSUBENT 154 0 F103600299999 SUBENT F1036003 20100520 F040F103600300001 BIB 3 3 F103600300002 REACTION (7-N-14(A,EL)7-N-14,,DA,,RTH) F103600300003 ERR-ANALYS (ANG-ERR-D) Angle digitizing error F103600300004 STATUS (CURVE) Fig.4 F103600300005 ENDBIB 3 0 F103600300006 COMMON 2 3 F103600300007 ANG-ERR-D ERR-DIG F103600300008 ADEG NO-DIM F103600300009 0.325 0.0073 F103600300010 ENDCOMMON 3 0 F103600300011 DATA 3 27 F103600300012 EN ANG-CM DATA F103600300013 MEV ADEG NO-DIM F103600300014 2.85 85.671 0.98441 F103600300015 2.85 96.588 1.0198 F103600300016 2.85 106.65 0.95297 F103600300017 2.85 116.43 0.88323 F103600300018 2.85 125.48 0.80471 F103600300019 2.85 134.12 0.67364 F103600300020 2.85 142.46 0.58051 F103600300021 2.85 150.51 0.51655 F103600300022 2.85 155.97 0.51381 F103600300023 2.95 85.95 1.0895 F103600300024 2.95 96.154 1.0577 F103600300025 2.95 107.08 0.96758 F103600300026 2.95 116.57 0.8628 F103600300027 2.95 125.63 0.76093 F103600300028 2.95 134.4 0.72035 F103600300029 2.95 142.59 0.73521 F103600300030 2.95 150.77 0.79968 F103600300031 2.95 156.23 0.79693 F103600300032 3.15 85.945 1.1537 F103600300033 3.15 96.45 0.94097 F103600300034 3.15 106.67 0.72531 F103600300035 3.15 116.16 0.62929 F103600300036 3.15 125.35 0.62666 F103600300037 3.15 134.39 0.78748 F103600300038 3.15 142.71 1.0329 F103600300039 3.15 150.73 1.3192 F103600300040 3.15 156.46 1.5558 F103600300041 ENDDATA 29 0 F103600300042 ENDSUBENT 41 0 F103600399999 SUBENT F1036004 20100520 F040F103600400001 BIB 3 3 F103600400002 REACTION (7-N-14(A,EL)7-N-14,,DA) F103600400003 ERR-ANALYS (EN-ERR-DIG) Energy digitizing error F103600400004 STATUS (CURVE) Fig.5 F103600400005 ENDBIB 3 0 F103600400006 COMMON 3 3 F103600400007 ANG EN-ERR-DIG ERR-DIG F103600400008 ADEG MEV MB/SR F103600400009 147.5 0.0018 0.0978 F103600400010 ENDCOMMON 3 0 F103600400011 DATA 2 37 F103600400012 EN DATA F103600400013 MEV MB/SR F103600400014 1.5151 117.28 F103600400015 1.6485 98.298 F103600400016 1.7101 90.355 F103600400017 1.9075 70.599 F103600400018 2.1023 55.691 F103600400019 2.3021 46.212 F103600400020 2.3994 41.182 F103600400021 2.4993 37.121 F103600400022 2.5505 34.413 F103600400023 2.5992 31.51 F103600400024 2.6504 29.576 F103600400025 2.7016 27.449 F103600400026 2.7503 24.159 F103600400027 2.8016 18.929 F103600400028 2.8503 12.536 F103600400029 2.8759 10.6 F103600400030 2.9015 11.766 F103600400031 2.9269 20.494 F103600400032 2.9525 22.436 F103600400033 2.9781 20.694 F103600400034 3.0012 17.982 F103600400035 3.0269 12.362 F103600400036 3.0525 8.2929 F103600400037 3.0781 8.6836 F103600400038 3.101 16.636 F103600400039 3.129 25.365 F103600400040 3.1543 40.104 F103600400041 3.1798 41.852 F103600400042 3.2029 41.273 F103600400043 3.2285 41.082 F103600400044 3.2541 39.727 F103600400045 3.2797 37.791 F103600400046 3.3027 39.151 F103600400047 3.3539 35.861 F103600400048 3.4026 33.539 F103600400049 3.4513 32.381 F103600400050 3.4999 31.417 F103600400051 ENDDATA 39 0 F103600400052 ENDSUBENT 51 0 F103600499999 SUBENT F1036005 20100520 F040F103600500001 BIB 4 13 F103600500002 REACTION (7-N-14(A,P)8-O-17,PAR,DA) F103600500003 DETECTOR Because of the low relative yield of protons it turned F103600500004 out to be necessary to interpose an appropriate F103600500005 thickness of nickel absorber foil in front of the F103600500006 proportional counter in order to stop all alpha F103600500007 particles and permit protons to be detected. Also, the F103600500008 solid angle subtended by the counter was increased by aF103600500009 factor of 20. A thickness of 0.00015 in. Ni foil F103600500010 allowed us to observe protons at angles greater F103600500011 than 90 degr. (lab). F103600500012 ERR-ANALYS (EN-ERR-DIG) Energy digitizing error F103600500013 (DATA-ERR) Error from the graphic bars F103600500014 STATUS (CURVE) Fig.6 F103600500015 ENDBIB 13 0 F103600500016 COMMON 4 3 F103600500017 ANG EN-ERR-DIG ERR-DIG E-LVL F103600500018 ADEG MEV MB/SR MEV F103600500019 90. 0.0013 0.0029 0. F103600500020 ENDCOMMON 3 0 F103600500021 DATA 3 29 F103600500022 EN DATA DATA-ERR F103600500023 MEV MB/SR MB/SR F103600500024 2.603 1.04E-02 F103600500025 2.6518 4.83E-02 3.02E-02 F103600500026 2.7022 8.46E-02 3.62E-02 F103600500027 2.7511 0.10277 3.61E-02 F103600500028 2.8015 8.47E-02 4.83E-02 F103600500029 2.8518 0.23569 4.85E-02 F103600500030 2.8741 0.40479 5.44E-02 F103600500031 2.8992 0.68863 6.64E-02 F103600500032 2.9155 1.3046 7.25E-02 F103600500033 2.9259 1.4676 7.31E-02 F103600500034 2.9348 1.0147 8.45E-02 F103600500035 2.9511 0.82756 6.64E-02 F103600500036 2.9748 0.72492 6.04E-02 F103600500037 3.062 0.91817 6.63E-02 F103600500038 3.0633 1.83 9.06E-02 F103600500039 3.0769 2.8989 0.1026 F103600500040 3.1006 3.9557 0.1208 F103600500041 3.1242 4.9521 0.1207 F103600500042 3.1375 5.2238 0.1198 F103600500043 3.1494 4.7468 0.1268 F103600500044 3.1761 3.3579 0.1087 F103600500045 3.1999 2.6937 0.1028 F103600500046 3.2503 1.637 8.45E-02 F103600500047 3.2755 1.4196 7.25E-02 F103600500048 3.3007 1.3411 6.04E-02 F103600500049 3.3511 1.2143 6.64E-02 F103600500050 3.3999 1.2506 6.63E-02 F103600500051 3.4488 1.305 6.65E-02 F103600500052 3.4992 1.2326 7.27E-02 F103600500053 ENDDATA 31 0 F103600500054 ENDSUBENT 53 0 F103600599999 ENDENTRY 5 0 F103699999999