ENTRY A0142 20200531 A095A014200000001 SUBENT A0142001 20200531 A095A014200100001 BIB 14 51 A014200100002 TITLE The N-15(p,alpha0)C-12 reaction of stellar energies A014200100003 AUTHOR (A.Redder, H.W.Becker, H.Lorenz-Wirzba, C.Rolfs, A014200100004 P.Schmalbrock, H.P.Trautvetter) A014200100005 REFERENCE (J,ZP/A,305,325,1982) A014200100006 INSTITUTE (2GERMST) A014200100007 FACILITY 1(CCW,2GERMST) HVEC 350 kV implantation unit used at theA014200100008 energy range of Ep=80-355 keV A014200100009 2(CCW,2GERMNZ) the 1 MV accelerator used at the energy A014200100010 range Ep = 350-810 keV A014200100011 SAMPLE 1Supersonic jet target. 15N enriched nitrogen gas at A014200100012 inlet pressures of p0 =0.79 to 1.41 bar. A014200100013 2The Ti15N targets were fabricated by vacuum evaporationA014200100014 of a layer of natural Ti onto a 0.25 mm thick A014200100015 Ta backing and then by conversion of the Ti film to A014200100016 the nitride in an atmosphere of 99% enriched 15N A014200100017 gas by resistance heating of the coated Ta backing. A014200100018 ANALYSIS 1The angle-integrated alpha-yields were presented from A014200100019 80 - 353 keV, result from experiments on Muenster A014200100020 accelerator A014200100021 2 The angle-integrated reaction yields were determined A014200100022 using expression W(theta)=1+a1(Ep)cos(theta) from A014200100023 the yields observed at 90.degr. in the experiments A014200100024 on the 1 MV Mainz accelerator (Ep(lab) = 350-810 keV). A014200100025 METHOD (SITA,BCINT,EXTB) A014200100026 MONITOR (7-N-15(P,A)6-C-12,,SIG) A014200100027 The absolute cross section was determined at A014200100028 Ep=353.4keV relative to the Rutherford elastic A014200100029 scattering cross section for detection angles A014200100030 of 22.5 - 150. degr. A total set of 7 values was A014200100031 obtained, which lead to a weighted average of 87/+-4 mbA014200100032 This value has been used as the standard in the A014200100033 normalization of the excitation functions A014200100034 MONIT-REF (,A.Redder,T,REDDER,1982) Diploma, Univer. Muenster A014200100035 DETECTOR (SIBAR) Two Si surface barrier detectors (with an A014200100036 active area of 300 mm2) A014200100037 REL-REF (M,,H.Lorenz-Wirzba,T,LRENZ-WIRZBA,1978) A014200100038 (A,C0644001,A.Schardt+,J,PR,86,527,1952) A014200100039 (D,C0645001,J.L.Zyskind+,J,NP/A,320,404,1979) A014200100040 ADD-RES (ANGD) Angular distribution measurements of the A014200100041 have been carried out with Ti15N solid targets at six A014200100042 energies in the range of Ep= 149 to 750keV. They were A014200100043 described by the expression W(theta)=1+a1(Ep)cos(theta)A014200100044 Thus a1(Ep) was calculated to be equal A014200100045 0.50-0.53/360 x Ep (Ep in keV).A014200100046 Astrophysical factor (on fig.) A014200100047 HISTORY (19820812C) A014200100048 (19991022A) Corrections in A0142.002. Lower case. A014200100049 (20011010U) Last checking has been done. A014200100050 (20011010A) Date is corrected A014200100051 (20200531A) SD: Major corrections in all Subents. A014200100052 Subent 003 added. A014200100053 ENDBIB 51 0 A014200100054 COMMON 3 3 A014200100055 EN-NRM MONIT MONIT-ERR A014200100056 KEV MB MB A014200100057 353.4 87. 4. A014200100058 ENDCOMMON 3 0 A014200100059 ENDSUBENT 58 0 A014200199999 SUBENT A0142002 20200531 A095A014200200001 BIB 5 13 A014200200002 REACTION (7-N-15(P,A)6-C-12,PAR,SIG) A014200200003 ERR-ANALYS (DATA-ERR) Error (=5%, except where quoted) includes A014200200004 uncertainties in: A014200200005 * number of counts, A014200200006 * absolute cross section and A014200200007 * absolute effective beam energy A014200200008 COMMENT (By authors) The N-15(p,alpha1)C-12 reaction is A014200200009 unimportant at stellar energy. A014200200010 STATUS (TABLE) Tbl.1 from Zeitschrift fuer Phys.,A305(1982)325A014200200011 HISTORY (20200531A) SD: SF5=PAR added; SF9=EXP deleted from A014200200012 REACTION code. BIB updated. Values at EN-ERR corrected A014200200013 according footnote of the table. Value at Ep=136.8keV A014200200014 corrected. A014200200015 ENDBIB 13 0 A014200200016 COMMON 1 3 A014200200017 E-LVL A014200200018 MEV A014200200019 0.0 A014200200020 ENDCOMMON 3 0 A014200200021 DATA 5 71 A014200200022 EN EN-ERR DATA DATA-ERR DATA-ERR A014200200023 KEV KEV MB MB PER-CENT A014200200024 77.6 0.5 2.4E-05 0.5E-05 A014200200025 78.5 0.5 2.0E-05 0.4E-05 A014200200026 92.3 0.5 1.8E-04 0.3E-04 A014200200027 107.4 0.5 9.7E-04 5. A014200200028 127.0 0.5 5.2E-03 5. A014200200029 136.8 0.5 0.011 5. A014200200030 166.3 0.5 0.078 5. A014200200031 176.0 0.5 0.12 5. A014200200032 196.0 0.5 0.36 5. A014200200033 205.2 0.5 0.68 5. A014200200034 215.6 0.5 0.96 5. A014200200035 222.2 0.5 1.25 5. A014200200036 234.7 0.5 2.2 5. A014200200037 245.1 0.5 3.5 5. A014200200038 255.0 0.5 4.8 5. A014200200039 264.6 0.5 7.6 5. A014200200040 274.5 0.5 11.0 5. A014200200041 284.5 0.5 16.7 5. A014200200042 293.7 0.5 24. 5. A014200200043 314.0 0.5 48. 5. A014200200044 323.5 0.5 61. 5. A014200200045 333.6 0.5 75. 5. A014200200046 343.4 0.5 83. 5. A014200200047 350. 0.5 87. 5. A014200200048 353.4 2. 87. 5. A014200200049 359. 2. 83. 5. A014200200050 369. 2. 88. 5. A014200200051 380. 2. 79. 5. A014200200052 391. 2. 80. 5. A014200200053 401. 2. 71. 5. A014200200054 409. 2. 71. 5. A014200200055 418. 2. 64. 5. A014200200056 429. 2. 65. 5. A014200200057 441. 2. 59. 5. A014200200058 450. 2. 60. 5. A014200200059 460. 2. 56. 5. A014200200060 468. 2. 58. 5. A014200200061 479. 2. 54. 5. A014200200062 490. 2. 55. 5. A014200200063 501. 2. 52. 5. A014200200064 511. 2. 54. 5. A014200200065 521. 2. 52. 5. A014200200066 531. 2. 53. 5. A014200200067 540. 2. 51. 5. A014200200068 550. 2. 53. 5. A014200200069 560. 2. 55. 5. A014200200070 572. 2. 53. 5. A014200200071 580. 2. 52. 5. A014200200072 591. 2. 55. 5. A014200200073 600. 2. 54. 5. A014200200074 610. 2. 55. 5. A014200200075 619. 2. 55. 5. A014200200076 630. 2. 57. 5. A014200200077 641. 2. 57. 5. A014200200078 650. 2. 59. 5. A014200200079 660. 2. 59. 5. A014200200080 671. 2. 63. 5. A014200200081 681. 2. 63. 5. A014200200082 691. 2. 64. 5. A014200200083 700. 2. 65. 5. A014200200084 710. 2. 69. 5. A014200200085 722. 2. 69. 5. A014200200086 731. 2. 73. 5. A014200200087 740. 2. 73. 5. A014200200088 749. 2. 79. 5. A014200200089 760. 2. 80. 5. A014200200090 771. 2. 86. 5. A014200200091 780. 2. 85. 5. A014200200092 790. 2. 94. 5. A014200200093 799. 2. 94. 5. A014200200094 810. 2. 103. 5. A014200200095 ENDDATA 73 0 A014200200096 ENDSUBENT 95 0 A014200299999 SUBENT A0142003 20200531 A095A014200300001 BIB 4 8 A014200300002 REACTION 1(7-N-15(P,TOT),,WID) A014200300003 2(7-N-15(P,EL),,WID) A014200300004 3(7-N-15(P,A),,WID) A014200300005 4(7-N-15(P,0),,J) A014200300006 5(7-N-15(P,0),,PTY) A014200300007 STATUS (TABLE) text on p. 331 of Zeitschr.Phys.,A305(1982)325 A014200300008 ERR-ANALYS (DATA-ERR) No information on the source of uncertainty A014200300009 HISTORY (20200531C) SD A014200300010 ENDBIB 8 0 A014200300011 NOCOMMON 0 0 A014200300012 DATA 10 1 A014200300013 EN-RES EN-ERR DATA 1DATA-ERR 1DATA 2DATA-ERR 2A014200300014 DATA 3DATA-ERR 3DATA 4DATA 5 A014200300015 KEV KEV KEV KEV KEV KEV A014200300016 KEV KEV NO-DIM NO-DIM A014200300017 335. 4. 103. 4. 0.9 0.1A014200300018 102. 4. 1. -1. A014200300019 ENDDATA 6 0 A014200300020 ENDSUBENT 19 0 A014200399999 ENDENTRY 3 0 A014299999999