ENTRY            30351   20091116                             31433035100000001 
SUBENT        30351001   20091116                             31433035100100001 
BIB                 14         40                                 3035100100002 
TITLE       Determination of isomer cross-section ratio for (n,g) 3035100100003 
            reaction on Te-120 using a radiochemical method.      3035100100004 
AUTHOR     (M.Jimenez,C.Archundia,S.Bulbulian)                    3035100100005 
INSTITUTE  (3MEXINI)                                              3035100100006 
           (3MEXMEX) Centro de Estudios Nucleares, Ciudad Univ.   3035100100007 
REFERENCE  (J,RRL,25,327,197605)                                  3035100100008 
FACILITY   (REAC,3MEXINI)                                         3035100100009 
INC-SOURCE (REAC) Triga Mark III reactor of Nuclear Center, Sazar 3035100100010 
INC-SPECT   Irradiation time of about 6 hours with an approximate 3035100100011 
            neutron flux of 2. X 10.**12 n/cm2/sec.               3035100100012 
SAMPLE      Natural 99% purity metallic tellurium, 20 gram.       3035100100013 
METHOD     (ACTIV) Activation.                                    3035100100014 
            Author's note:  Since chemical changes occuring in    3035100100015 
            molecules where an atom is affected by an internally  3035100100016 
            converted isomeric transition can be detected, it is  3035100100017 
            possible to use the difference in the oxidation       3035100100018 
            state of the metastable and ground state isomers in   3035100100019 
            order to obtain its separation and therefore, an      3035100100020 
            indirect measurement of activation cross-section      3035100100021 
            ratio.                                                3035100100022 
            Chemical oxidation of the radioactive materials (such 3035100100023 
            as Te-121m and Te-121g) to telluric acid gives        3035100100024 
            'hexavalent' tellurium in both metastable and ground  3035100100025 
            state species, whereas isomeric transition produces   3035100100026 
            'tetravalent' ground state species. =                 3035100100027 
DETECTOR   (GELI) Ge(Li) detector.                                3035100100028 
PART-DET   (DG) Decay gammas.                                     3035100100029 
COMMENT     Equal aliquot of the original telluric acid solution, 3035100100030 
            which contained the equilibrium amount of Te-121      3035100100031 
            ground state isomer was used as the standard of       3035100100032 
            analysis.                                             3035100100033 
STATUS     (TABLE) Radiochem.Radioanal.Letters,25(5/6)(1976)327.  3035100100034 
           (APRVD) Approved by Archundia, with his remark on      3035100100035 
            'comment', 1977/02/15.                                3035100100036 
HISTORY    (19760921C) KO.                                        3035100100037 
           (19770324U) KO. -'Approved' added.Insertion of comment 3035100100038 
            amendment after memo 4C-1/111 (data heading 'data' to 3035100100039 
            'ratio' in sub-entry .002.-                           3035100100040 
           (20090115A) BIB section updated                        3035100100041 
           (20091116U) On. 3MEXCNM -> 3MEXINI and 3MEXMEX added   3035100100042 
ENDBIB              40          0                                 3035100100043 
NOCOMMON             0          0                                 3035100100044 
ENDSUBENT           43          0                                 3035100199999 
SUBENT        30351002   20090115                             31343035100200001 
BIB                  3          5                                 3035100200002 
REACTION   (52-TE-120(N,G)52-TE-121-M/G,,SIG/RAT,,SPA)            3035100200003 
DECAY-DATA (52-TE-121-M1,150.D)                                   3035100200004 
           (52-TE-121-G,17.D)                                     3035100200005 
ERR-ANALYS (DATA-ERR) Relative deviation from the mean value of   3035100200006 
           a set of several identical experiments.                3035100200007 
ENDBIB               5          0                                 3035100200008 
NOCOMMON             0          0                                 3035100200009 
DATA                 3          1                                 3035100200010 
EN-DUMMY   DATA       DATA-ERR                                    3035100200011 
EV         NO-DIM     NO-DIM                                      3035100200012 
 2.5300E-02 9.2000E+00 1.7000E+00                                 3035100200013 
ENDDATA              3          0                                 3035100200014 
ENDSUBENT           13          0                                 3035100299999 
ENDENTRY             2          0                                 3035199999999