133 Xe 133 Xem and 133 I decay

133 Xe, 133 Xem and 133 I decay evaluations CIEMAT M. GALAN

SUMMARY Evaluation procedure l DECAY SCHEME AND APPLICATIONS l HALF-LIFE MEASUREMENTS l RELATIVE GAMMA-RAY PROBABILITIES l NORMALIZATION AND ABSOLUTE GAMMA-RAY PROBABILITIES l GAMMA TRANSITIONS AND MULTIPOLARITIES l BETA TRANSITION PROBABILITIES l ATOMIC DATA l SECONDARY EMISSIONS (X-RAY AND AUGER ELECTRON PROBABILITIES)

SHORT A=133 CHAIN EVALUATED b 133 I 133 Xem I. T. b 133 Xe 133 Cs

Applications l 133 I, 133 Xem and 133 Xe are fission products. Xenon isotopes are of particular interest in reactor operation. l 133 Xe is used in medical studies for: l l Diagnostic evaluation in pulmonary function. Imaging the lung. Assessment of cerebral blood flow. Fetal risk diagnoses.

133 Xe decay scheme Ensdat file

133 Xe Half-life measurements Reference Value (d) Comments 2002 UN 02, 1992 UN 01 1975 HO 18 1975 WO 10 1974 CA 27 1974 FOZY 1972 EM 01 1968 AL 16 1950 MA 15 5, 2475 (5) 5, 25 (2) 5, 250 (13) 5, 245 (6) 5, 240 (6) 5, 29 (1) 5, 312 (25) 5, 270 (2) T 1/2 (mean) = 5, 243 (1) d (1995 RA 12, from 1975 MEZK) T 1/2 (mean) = 5, 244 (7) d (Lagoutine et al. , 1982) Rejected by Chauvenet’s criterion Mean 2/N-1 (critical) LWM 5, 2474 (5) 3, 32 NRM 5, 2474 (5) 2, 37 (95%) RT 5, 2474 (5) Recommended 5, 2474 (5) Includes the most precise value D = 0, 08% D = 0, 07%

133 Xe Relative gamma emission probabilities 6 -rays emitted in the decay of 133 Xe Energy ke. V 2, 1(Cs) 79, 6142 (12) 1, 0(Cs) 80, 9979 (11) 2, 0(Cs) 160, 6120 (16) 3, 2(Cs) 223, 2368 (18) 3, 1(Cs) 302, 8508 (5) 3, 0(Cs) 383, 8485 (12)

133 Xe Relative gamma emission probabilities Evaluation: • The group I 79, 6+I 81 was considered as the reference line. • I 79, 6 was deduced using the ratio I 79, 6/I 160, 6 from 133 Ba decay evaluation (Chechev and Kuzmenko, 2004): • I 160, 6 and I 223 averaged from 1968 AL 16 and 1995 MA 05. • I 303 averaged from 1969 ER 04, 1968 AL 16 and 1995 MA 05.

133 Xe Relative gamma emission probabilities • Experimental values for the ratio I 384/I 303: Reference I 384/I 303 1958 PL 55 0, 50 (11) 1959 JH 17 0, 512 (13) 1961 ER 041 0, 504 (88) 1968 AL 16 0, 458 (20) 1992 MA 05 0, 467 (27) LWM 0, 492 2 /N-1 (crit. ) 2, 37 Internal uncertainty 0, 010 External uncertainty 0, 012 Recommended 0, 492 (12) • I 384 deduced from the 303 ke. V -ray emission probability and the averaged I 384/I 303 ratio :

133 Xe Relative gamma emission probabilities Reference I 79, 6 I 81 I 161 I 223 I 303 I 384 1958 PL 55 - - 0, 010 0, 005 1959 JH 17 - 100 1, 4 - 0, 084 0, 043 1961 ER 04 0, 8 (1) 100 0, 109 (10) 0, 0004 (+4 -3) 0, 0123 (12) 0, 0062 (9) 1968 AL 16 100 1, 6 (7) 98, 2 (59) 0, 174 (9) 0, 000647 (613) 0, 0135 (4) 0, 00618 (19) 1992 MA 05 100 0, 242 (25) 0, 00044 (18) 0, 0193 (7) 0, 000901 (41) Weighted average 0, 182 0, 00046 0, 0164 2/N-1 (crit. ) 6, 55 6, 6 6, 4 Internal uncertainty 0, 008 0, 00017 0, 0005 External uncertainty 0, 022 0, 00006 0, 0029 0, 182 (22) 0, 00046 (17) 0, 0164 (29) Recommended 0, 76 (9) 99, 24 (9) 0, 0081 (14)

133 Xe Normalization • Normalization factor was deduced from the decay scheme considering no direct feeding to the g. s. • ICCs from Br. Icc computer code (2002 BA 85). Associated uncertainties are 1, 4%. • Checked with GABS: NR = 0, 373 (4)

133 Xe Absolute gamma emission probabilities Energy ke. V Photons per 100 disintegrations 2, 1(Cs) 79, 6142 (12) 0, 28 (3) 1, 0(Cs) 80, 9979 (11) 37, 0 (3) 2, 0(Cs) 160, 6120 (16) 0, 068 (8) 3, 2(Cs) 223, 2368 (18) 0, 00017 (6) 3, 1(Cs) 302, 8508 (5) 0, 0061 (11) 3, 0(Cs) 383, 8485 (12) 0, 0030(5) • E and uncertainties from 2000 HE 14. • Absolute -ray probabilities uncertainties calculated from 1986 BR 21.

133 Xe Gamma transitions and multipolarites • Gamma-ray transition probabilities deduced from %I and the adopted ICC. • Multipolarities: evaluated by 1977 KR 13 from experimental - angular correlation data. § d 80 from 1995 RA 12 from (exp), penetration parameter l(M 1)= 4(4). -ray energy d Multipolarity 79, 6142 (12) 0, 124 (15) M 1+1, 54%E 2 80, 9979 (11) -0, 151 (2) M 1+2, 28%E 2 160, 6120 (16) +0, 96 (5) M 1+92, 2%E 2 223, 2368 (18) -0, 114 (14) M 1+1, 3%E 2 302, 8508 (5) +0, 022 (20) M 1+0, 05%E 2 383, 8485 (12) E 2

133 Xe Beta transitions • energies deduced from the Q value and the level energies in 133 Cs, the later deduce from -ray energies (2000 HE 14). The adopted level energies values were checked with GTOL computer code. • All -transition are allowed. Log ft values were obtained with LOGFT code. • % -probabilities were deduced from -ray transition intensity balance at each level. Associated uncertainties were obtained using reference 1988 BR 07. Energy ke. V Probability × 100 Nature lg ft -0, 3 43, 6 (24) 0, 0097 (12) Allowed 6, 82 -0, 2 266, 8 (24) 0, 87 (8) Allowed 7, 31 -0, 1 346, 4 (24) 99, 12 (8) Allowed 5, 62

133 Xe Atomic data and secondary emissions • Atomic data from 1996 SC 06. • X-ray and Auger electron emission probabilities from EMISSION code. Results were checked with RADLST code. Differences < 1%. Average energy (ke. V) Type Intensity (%) Emission Radlst 4, 29 XL 5, 79 (11) 5, 83 (18) 30, 625 XK 2 13, 54 (24) 13, 6 (5) 30, 973 XK 1 25, 0 (5) 25, 0 (9) 35, 00 XK 9, 09 (16) 9, 1 (3) 3, 55 Auger-L 49, 9 (3) 49, 9 (15) 25, 50 Auger-K 5, 64 (24) 5, 63 (19)

Comparison with previous evaluations Lagoutine et al. (1982) 1995 Ra 12 This evaluation Half-life 1974 CA 27, 1975 HO 18, 1975 WO 10 1975 MEZK 1950 MA 15, 1968 AL 16, 1974 FOZY, 1974 CA 27, 1975 WO 10, 1975 HO 18, 2002 UN 02 E 1968 AL 16, 1981 HE 15, Imbert et al. , LMRI 1981 -88 133 Ba e. c. decay 2000 HE 14 I 1961 ER 04, 1974 CA 27 (no uncert. ), 1977 SC 31(133 Ba), Imbert et al. , LMRI 1981 -88 1983 LOZV (Priv. Comm. ) 1958 PL 55, 1959 JH 17, 1961 ER 04, 1968 AL 16, 1992 MA 05 1961 ER 04 Q value and level energy (GTOL) 1993 AU 05 2003 AU 03 E Q 1993 AU 05

133 Xem decay scheme

133 Xem Half-life measurements Reference Value (days) 1975 HO 18 1974 FOZY 1968 AL 16 1961 ER 04 1951 BE 11 2, 19 (5) 2, 188 (8) 2, 191 (29) 2, 26 (2) 2, 30 (8) Mean Comments T 1/2 (mean) = 2, 19 (1) (1995 RA 12) D = 0, 4% T 1/2 (mean) = 2, 188 (22) (Lagoutine et al. , 1982) D = 0, 5% 2/N-1 (critical) LWM 2, 198 (13) 3, 32 NRM 2, 200 (11) 2, 37 (95%) RT 2, 191 (8) Adopted value 2, 198 (13)

133 Xem isomeric transition (1) • Different experimental values for the -ray transition energy: Reference Value (ke. V) 1976 ME 16 233, 221 (15) 1972 AC 02 233, 2 (4) 1952 BE 55 232, 8 (3) 1951 BE 11 232, 8 (4) 2/N-1 (crit. ) 2, 60 LWM 233, 219 (15) NRM 233, 219 (15) RT 233, 11 (12) Adopted value 233, 219 (15)

133 Xem isomeric transition (2) • ICCs from Br. Icc computer code (2002 BA 85). • %I = 100 / (1 + T) = 100 / [1 + 8, 84 (13)] = 10, 16 (13) %. • P +ce = 100 % and %Pce = 89, 84 (13) % • The k and L+M+… experimental values together with theoretical ones are shown in the table: Reference K L+M+. . 1954 BE 55 4, 4 (14) 1, 9 (6 1968 AL 16 7, 68 (25) 3, 8 (3) 1968 HA 52 6, 37 (9) 2, 51 (5) 1972 AC 02 7, 4 (14) 2, 9 (6) 1978 RO 22 6, 32 (9) 2, 69 (4) 2002 BA 85 6, 24 (9) 2, 59 (3) 2008 PE 04 6, 5 (9) 2, 9 (4)

133 Xem Atomic data • Atomic data from 1996 SC 06. • X-ray and Auger electron emission probabilities from EMISSION code. Results were checked with RADLST code. Differences < 0, 6%. Average energy (ke. V) Type Intensity (%) Emission Radlst 4, 110 XL 7, 6 (4) 7, 60 (22) 29, 458 (10) XK 2 16, 0 (4) 16, 0 (6) 29, 779 (10) XK 1 29, 7 (6) 29, 7 (11) 33, 60 XK 10, 64 (24) 10, 6 (4) 3, 43 Auger-L 70, 4 (10) 70, 3 (20) 24, 60 Auger-K 7, 1 (4) 7, 1 (3)

Comparison with previous evaluations Lagoutine et al. (1982) 1995 Ra 12 This evaluation Half-life 1974 FOZY, 1974 CA 27, 1975 HO 18 1961 ER 04, 1968 AL 16, 1974 FOZY, 1975 HO 18 1951 BE 11, 1961 ER 04, 1968 AL 16, 1974 FOZY, 1975 HO 18 E 1976 ME 16 1951 BE 51, 1952 BE 55, 1972 AC 02, 1976 ME 16 ICC 1968 HA 52 1978 RO 22 2002 BA 85 Q 1993 AU 05 2003 AU 03

133 I decay scheme Ensdat file 11 ’s 47 ’s

133 I Half-life measurements Reference Value (h) Comments 1968 RE 04 1966 EI 01 1965 AN 05 1955 WA 35 1953 KA 28 20, 9 (1) 20, 8 (2) 20, 3 (3) 20, 9 (3) 20, 8 (2) T 1/2 (mean) = 20, 8 (1) h (1995 RA 12) Rejected by Chauvenet’s criterion Mean 2/N-1 (crit. ) LWM 20, 87 (8) 3, 78 NRM 20, 87 (8) 2, 60 (95%) RT 20, 87 (8) Recommended 20, 87 (8) D = 0, 3%

133 I Relative gamma emission probabilities • Values are from 1976 ME 16. A 2% was increased in the uncertainty to account for uncertainty calibration as cited in this reference. • Other experimental values: 1974 KO 26, but not used because detailed information about detector calibration, experimental conditions, sample preparation, calculation and uncertainties estimations is absent.

133 I Normalization • Normalization factor was deduced from the decay scheme considering no direct feeding to the g. s. • ICCs from Br. Icc computer code (2002 BA 85). P +ce(233 ke. V) from 1976 ME 16. • Checked with GABS: NR = 0, 0863 (16)

133 I Gamma transitions and multipolarites • Gamma-ray transition probabilities deduced from %I and the adopted ICC. • No experimental measurements of conversion coefficients (except for the 233 -ke. V line) have been found in the bibliography. • Multipolarities: from 1977 KR 13 or from 1974 KO 26.

133 I Beta transitions • energies deduced from the Q value and the level energies in 133 Xe. Checked with GTOL. • % -probabilities from -ray transition intensity balance at each level. Associated uncertainties were obtained using 1988 BR 07. Log ft from LOGFT code. Beta Transition Adopted (%) 1966 EI 01 (%) 1971 SA 09 (%) 1976 ME 16 (%) 0, 13 0, 414 (15) 0, 5 0, 42 0, 12 1, 25 (4) 3, 5 1, 1 1, 26 0, 11 0, 397 (12) 0, 4 0, 3 0, 4 0, 10 3, 75 (7) 3, 7 2, 9 3, 68 0, 9 3, 12 (6) 3, 3 3, 2 3, 16 0, 8 0, 58 (5) 0, 5 0, 62 0, 7 0, 026 (18) - - - 0, 6 4, 16 (13) 2, 3 3, 5 4, 1 0, 5 1, 81 (6) - 2, 3 1, 81 0, 3 83, 44 (21) 0, 1 1, 07 (6) 85, 4 1, 4 83, 2 1, 4 83, 5 1, 07

133 I Atomic data and secondary emissions • Atomic data from 1996 SC 06. • X-ray and Auger electron emission probabilities from EMISSION code. Results were checked with RADLST. Differences < 0, 6%. Average energy (ke. V) Type Intensity (%) Emission 4, 11 XL 29, 458 (10) Radlst 0, 0653 (13) 0, 0656 (18) XK 2 0, 163 (4) 0, 163 (7) 29, 779 (10) XK 1 0, 303 (6) 0, 303 (13) 33, 6 XK 0, 1084 (23) 0, 109 (5) 3, 430 Auger-L 0, 607 (4) 0, 607 (22) 24, 60 Auger-K 0, 072 (4) 0, 072 (3)

Comparison with previous evaluations 1995 Ra 12 This evaluation Half-life 1953 KA 28, 1955 WA 35, 1965 ANo 5, 1966 EI 01, 1968 RE 04 Same references but 20, 87(8) h instead of 20, 8 (1)h E 1976 ME 16, 2000 HE 14 I 1976 ME 16 E 1966 EI 01 Q value and level energy (GTOL) Q 1993 AU 05 2003 AU 03

CONCLUSIONS • New precise values for 133 Xe, 133 Xem and 133 I half-lives. • 133 Xe: I from 1992 MA 05 values not were considered in previous evaluations. • Recalculated %I using interpolated ICC from 2002 BA 85. • Recent E from 2000 HE 14. • Recalculated E and %. • New measurements of the half-lives and I are highly recommended.

Next evaluations • 135 m. Xe, already finished (submitted for revision) • 22 Na • 59 Ni • 94 Nb Thanks for your attention!

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