ENTRY C2603 20210320 C202C260300000001
SUBENT C2603001 20210320 C202C260300100001
BIB 11 37 C260300100002
TITLE Measurement of the 230Th(p,2n)229Pa and 230Th(p,3n) C260300100003
228Pa reaction cross sections from 14.1 to 16.9 MeV C260300100004
AUTHOR (K.N.Kmak,D.A.Shaughnessy,J.Vujic) C260300100005
INSTITUTE (1USAUCX,1USALRL) C260300100006
REFERENCE (J,PR/C,103,034610,2021) C260300100007
FACILITY (VDGT,1USALRL) Experiment performed at the Center for C260300100008
Accelerator Mass Spectrometry at Lawrence Livermore C260300100009
National Laboratory using 10 MV tandem accelerator C260300100010
SAMPLE Thorium was separated from uranium ore. The final C260300100011
product was 91.32+-0.77 mg of thorium with a purity C260300100012
of 99.5+-1.2 wt%. Isotope ratio 230Th/232Th was C260300100013
determined by mass spectrometry to be 0.0922+-0.00150. C260300100014
In experiment a target stack was used to degrade beam C260300100015
energy. Stack consisted of C260300100016
- thin tantalum cover foil 5 mu-m thick C260300100017
- ThO2 target with thickness ranging from C260300100018
921.710+-0.005 to 1913.309+-0.005 mu-g Th/cm2 on C260300100019
Ti backing (cover) 2 mu-m thick C260300100020
- Y monitor foil C260300100021
- spacer foil Ta (10 mu-m) or Pt (25 mu-m) C260300100022
- ThO2 target on Ti backing C260300100023
- spacer foil Ta (10 mu-m) or Pt (25 mu-m) C260300100024
- ThO2 target on Ti backing C260300100025
- Beam stop C260300100026
Together 8 target foils were irradiated. In first C260300100027
experiment stack with two target foils without spacers C260300100028
was used. C260300100029
(90-TH-230,ENR=0.0844) C260300100030
(90-TH-232,ENR=0.9156) C260300100031
DETECTOR (HPGE) Gamma ray spectra were measured using GPGe C260300100032
detectorsaas well as low energy photon spectcrometer C260300100033
(LAPS) detector. C260300100034
METHOD (ACTIV,CHSEP) Column chromatography was used to C260300100035
separate protactinium. C260300100036
MONITOR (39-Y-89(P,N)40-ZR-89,,SIG) C260300100037
ERR-ANALYS (DATA-ERR) Source of uncertainties not described C260300100038
HISTORY (20210320C) Compiled by S.H. C260300100039
ENDBIB 37 0 C260300100040
NOCOMMON 0 0 C260300100041
ENDSUBENT 40 0 C260300199999
SUBENT C2603002 20210320 C202C260300200001
BIB 3 5 C260300200002
REACTION (90-TH-230(P,2N)91-PA-229,,SIG) C260300200003
DECAY-DATA (91-PA-229,1.50D,DG,119.0,0.00129, C260300200004
XR,89.957,0.182, C260300200005
XR,93.35,0.293) C260300200006
STATUS (TABLE) Data taken from tab.1 of the reference PR/C C260300200007
ENDBIB 5 0 C260300200008
NOCOMMON 0 0 C260300200009
DATA 4 6 C260300200010
EN EN-RSL DATA DATA-ERR C260300200011
MEV MEV MB MB C260300200012
16.9 0.1 107. 15. C260300200013
16.0 0.1 148. 9. C260300200014
15.7 0.14 156. 16. C260300200015
14.9 0.1 163. 32. C260300200016
14.4 0.1 182. 12. C260300200017
14.1 0.1 166. 32. C260300200018
ENDDATA 8 0 C260300200019
ENDSUBENT 18 0 C260300299999
SUBENT C2603003 20210320 C202C260300300001
BIB 3 10 C260300300002
REACTION (90-TH-230(P,3N)91-PA-228,,SIG) C260300300003
DECAY-DATA (91-PA-228,19.5HR,DG,129.065,0.426, C260300300004
DG,338.320,0.076, C260300300005
DG,409.462,0.093, C260300300006
DG,911.204,0.23, C260300300007
XR,89.957,0.257, C260300300008
XR,93.350,0.419) C260300300009
Half-life was measured by authors as 19.5+-0.4 hr, C260300300010
which is different from the value used in literature. C260300300011
STATUS (TABLE) Data taken from tab.1 of the reference PR/C C260300300012
ENDBIB 10 0 C260300300013
NOCOMMON 0 0 C260300300014
DATA 4 3 C260300300015
EN EN-RSL DATA DATA-ERR C260300300016
MEV MEV MB MB C260300300017
16.9 0.1 23. 1.3 C260300300018
16.0 0.1 1.6 0.15 C260300300019
15.7 0.14 2.7 1.6 C260300300020
ENDDATA 5 0 C260300300021
ENDSUBENT 20 0 C260300399999
SUBENT C2603004 20210320 C202C260300400001
BIB 3 10 C260300400002
REACTION (90-TH-232(P,N)91-PA-232,,SIG) C260300400003
DECAY-DATA (91-PA-232,1.31D,DG,150.059,0.104, C260300400004
DG,387.884,0.0655, C260300400005
DG,581.398,0.0618, C260300400006
DG,819.187,0.0734, C260300400007
DG,866.760,0.0734, C260300400008
DG,969.315,0.423, C260300400009
XR,94.654,0.0101, C260300400010
XR,98.434,0.0162) C260300400011
STATUS (TABLE) Data taken from tab.1 of the reference PR/C C260300400012
ENDBIB 10 0 C260300400013
NOCOMMON 0 0 C260300400014
DATA 4 6 C260300400015
EN EN-RSL DATA DATA-ERR C260300400016
MEV MEV MB MB C260300400017
16.9 0.1 17.3 1.0 C260300400018
16.0 0.1 14.7 0.8 C260300400019
15.7 0.14 15.2 0.7 C260300400020
14.9 0.1 12.0 0.7 C260300400021
14.4 0.1 12.1 0.7 C260300400022
14.1 0.1 11.7 0.7 C260300400023
ENDDATA 8 0 C260300400024
ENDSUBENT 23 0 C260300499999
ENDENTRY 4 0 C260399999999