237NP 241AM A DECAY 06NDS 200608
237NP H TYP=MOD$AUT=M.S. BASUNIA$DAT=27-Jun-2012$COM=updated T (level 59.5)$
237NP H TYP=FUL$AUT=M. S. Basunia$CIT=NDS 107, 3323 (2006)$CUT=15-Mar-2006$
237NP cA E From 1964Ba26, except otherwise noted. Other measurements:
237NP2cA 1976BaZZ, 1971Gr17 (s), 1968Ba25 (s), 1968Ka09 (|a|g), 1965Mi06
237NP3cA (semi,|a|g), 1964Ba26 (s), 1962Le11 (s), 1957Ro20 (s), 1956Go43,
237NP4cA 1955Go57 (s), 1952As04 (s). See 1971El10 for tabulation of measured
237NP5cA values. Other measurements: 1970By01, 1972De34, 1972Ko04, 1987Go21,
237NP6cA 1987Ko07.
237NP cA E(R) Recommended in 1991Ry01.
237NP cA E(T) Expected in 1968Ka09. E|a deduced by the evaluator from
237NP2cA Q(|a)=5637.82 ({+241}Am) and feeding level energy.
237NP cA IA From 1964Ba26, except otherwise noted. Other I|a
237NP2cA measurements: 1957Ro20, 1966Le13. See 1971El10 for tabulation of
237NP3cA measured intensities.
237NP cA HF r{-0}({+237}Np)=1.5091 {I10}, average of
237NP2cA r{-0}({+237}U)=1.5168 {I3} and r{-0}({+237}Pu)=1.5013 {I10}
237NP3cA (1998Ak04), has been used in calculations. See also 1980Ka41 and
237NP4cA 1994Du03 for calculated hindrance factors and discussions.
237NP cG Annihilation radiation is reported in 1973Lj01, probability
237NP2cG of pair production was deduced; 3.1|*10{+-9} {I6} pairs per |a decay
237NP3cG were obtained. 1973Lj01 suggested that the e|+ pairs were due to
237NP4cG internal pair production occurring in the |a-decay process. See also
237NP5cG 1982Lo10 for discussions.
237NP tG |a|g: see 1965Mi06, 1968Ka09, 1969KaZR, 1977VaZW.
237NP tG |g|g: see 1965Mi06, 1955Tu13, 1957Ma17.
237NP tG |a|g(t):
237NP2tG (|a)(59|g)(t) T{-1/2}(59 level)=63 ns {I5}
237NP+tG 1952Be47
237NP3tG =63 ns 1964Sa31
237NP4tG =64.2 ns {I20} 1968Ob02
237NP5tG =66.7 ns {I7} 1971Ga16
237NP6tG =66.9 ns {I10} 1972Mc12
237NP7tG =68.3 ns {I2} 1972Mi23
237NP8tG
237NP tG |g|g(t):
237NP2tG (ce 43|g)(ce 26|g)(t),
237NP3tG (ce 43|g)(ce 59|g)(t): T{-1/2}(59 level)=60 ns {I20}
237NP+tG 1955Tu13
237NP4tG (ce 26|g)(ce 33|g)(t): T{-1/2}(33 level)|<4 ns 195
237NP+tG 5Tu13
237NP5tG
237NP tG (|a)(59|g)(|q): see 1963Fl01,1954No31.
237NP tG (|a)(59|g)(|q,H): see 1955Kr02.
237NP tG (|a)(59|g)(|q,t): see 1957Kr52,1967Gu08,1973Ch22
237NP tG (|a)(59|g)(|q,H,t): see 1966He13,1967Gu08,1970An13
237NP tG (59|g)(Circular Polarization): see 1990In01.
237NP tG (|a)(|q,T): see 1974So10,1968Ma42,1990|g
237NP2tG For calculations of (|a)(|q), including deformation,
237NP3tG see, for example, 1992De37.
237NP tG X rays(neptunium):
237NP2tG M x-rays: 6.3% {I6} 1971Ka48
237NP3tG L x-rays: 37.7% 1957Ma17
237NP4tG 37.3% {I18} 1971Ge11
237NP5tG 38.9% {I20} 1971Wa28
237NP6tG 38.2% {I8} 1974Ca16
237NP7tG 37.9% 1976GuZN
237NP8tG 45.0% 1977Hs02
237NP9tG 38.3% {I10} 1988SeZR
237NP2tG 37.7% {I19} 1992Bl07
237NP3tG K x-rays: 0.0040% 1976GuZN
237NP tG
237NP cG For measured L- and K-subshell energies and intensities, see
237NP2cG the references quoted above and 1987De22, 1988Co07, 1990Po14. See also
237NP3cG 1974Ga40. Other measurements: 1952Be24, 1957Ma17, 1990Po14, 1992An03,
237NPxcG 1992Ba08.
237NP cG For recommended L-subshell energies and intensities,
237NP2cG see 1991BaZS.
237NP cG For deduced L-fluorescence yields, see 1990SeZT.
237NP cG E From 1978Ge06, 1978Ge17 (semi), unless otherwise indicated.
237NP2cG See also 1955Da02 (cryst), 1959Sa10 (s ce), 1964Wo03 (s ce), 1966Ko06
237NP3cG (s ce), 1966Le13 (semi), 1966Mi05 (semi), 1967Gu08 (semi), 1968Ka09
237NP4cG (|a|g semi), 1976GuZN (semi), 1978Ov01 (semi). Other measurements:
237NP5cG 1952Be24, 1955Ba31, 1955Da02, 1955Ja01, 1955Tu13, 1956Ho38, 1957Ro20,
237NPxcG 1965Be38, 1967Br26, 1979Ce04.
237NP cG RI From 1976GuZN, unless otherwise noted (photons
237NP2cG per 1|*10{+7} |a decays). The quoted intensities of 1967Gu08,
237NP3cG 1971Ge11, 1974Ca16, 1976GuZN, 1978Ge06, and 1984Ov02 have been
237NP4cG normalized to I|g(59.537|g)=35.9|*10{+5}; intensities of 1978Ge17 and
237NP5cG of 1971Cl03 have been normalized to I|g(208|g)=79.1. See also 1966Le13,
237NP6cG 1966Mi05, and 1968Ka09 for measured I|g's. Other measurements:
237NP7cG 1992Ba08. For the multiply placed transitions, when one component is
237NP8cG expected to be much weaker, the measured photon intensity is assigned
237NPxcG to the stronger component.
237NP cG M From ce data of 1964Wo03, 1966Ko06, 1959Sa10. See 1971El10
237NP2cG for tabulation of ce data. The quoted Ice's here have been
237NP3cG normalized to Ice(L3; 59.54|g)=4.7|*10{+5} {I5} so that |a(L3)=0.131
237NP4cG {I13}, as deduced in {+237}U |b{+-} decay. Multipolarities deduced in
237NP5cG {+237}U |b{+-} decay are also included for completeness, and are noted.
237NP6cG Multipolarities in square brackets are from level scheme.
237NP7cG Early electron measurements: 1955Ba31, 1955Ja01, 1956Ho38.
237NP cG E(B) From {+237}U |b{+-} decay; transition was not observed in
237NP2cG {+241}Am decay.
237NP cG E(P) From {+238}U(p,2n|g); transition was not observed in
237NPxcG {+241}Am decay.
237NP cG M(A) Anomalously converted. See 1960As02, 1966Ya05, 1967Pa23,
237NP2cG and 1970Gr36 for discussions.
237NP cG CC(A) Obtained from measured Ice's and I|g's in {+241}Am |a and
237NP2cG {+237}U |b{+-} decays.
237NP cG E(I) Transition not observed, energy from level scheme; existence
237NP2cG expected because of observed coincidences.
237NP cG E(S) Intraband transition, expected but not observed; energy from
237NP2cG level scheme.
237NP cG E(Q) Questionable transition.
237NP cL E From a least squares fit to the |g-ray energies.
237NP cL J From adopted levels.
237NP cL E(A) 5/2[642] band
237NP cL E(B) 5/2[523] band
237NP cL E(D) 1/2[530] band
237NP cL E(E) 1/2[400] band
237NP cL E(F) K=5/2 band
237NP cL E(G) 3/2[521] band
241AM P 0.0 5/2- 432.6 Y 6 5637.82 12
237NP N 1.00E-5 1 1.0
237NP PN 1.00E-5 1 2
237NP G 32.183 1740 40
237NP cG E From 1976GuZN; not listed by others.
237NP G 57.85 5 5.2E+2 15
237NP cG RI From 1978Ge06; not listed by others.
237NP G 106.42 5 1.5 Q
237NP cG RI From 1978Ge17; not listed in 1976GuZN.
237NP G 128.05
237NP cG E From 1979Ar11; not listed by others.
237NP G 136.7
237NP cG E From 1979Ar11; not listed by others.
237NP G 156.4 3 Q
237NP cG E observed only in coincidence spectrum (1968Ka09).
237NP cG RI 1.2 was given in 1968Ka09.
237NP G 190.40 0.22 5
237NP cG E from 1976GuZN; not listed by others.
237NP G 201.70 14 0.08 Q
237NP cG E from 1974HeYW, 1971Cl03.
237NP cG RI from 1978Ge17, 1971Cl03.
237NP G 270.63 15 0.064 20
237NP G 340.56 8 0.43 Q
237NP cG RI from 1978Ge17; not listed in 1976GuZN. I|g=0.79 from
237NPxcG 1971Cl03.
237NP G 389.0 3 0.049
237NP cG RI from 1978Ge17; not listed by others.
237NP G 390.62 10 0.590 27
237NP G 415.88 10 0.31 Q
237NP cG RI from 1978Ge17; not given in 1976GuZN, but I|g=0.16 was listed
237NP2cG in 1971GuZY.
237NP G 429.94 10 0.115 23
237NP G 442.81 7 0.35 3
237NP G 485.91 20 0.10 3
237NP G 582.6 0.023 12 Q
237NP cG E from 1976GuZN; not listed by others.
237NP G 693.62 8 0.368 17
237NP G 709.45 5 0.641 18
237NP G 731.5 0.047 15
237NP cG E from 1976GuZN; not listed by others.
237NP G 742.9 3 0.035
237NP cG RI from 1978Ge17; not listed in 1976GuZN.
237NP G 759.38 10 0.167 9
237NP G 763.9 3 0.020 6
237NP G 777.2 0.0061 31
237NP cG E from 1976GuZN; not listed by others.
237NP G 780.7 2 0.025 5
237NP G 782.2 5 0.015
237NP cG RI from 1978Ge17; not listed by others.
237NP G 789.17 25 0.039 6
237NP G 794.92 20 0.094
237NP cG RI from 1978Ge17; not listed by others.
237NP G 812.01 30 0.061 8
237NP G 819.0 10 0.040 6
237NP G 822.6 0.022 6
237NP cG E from 1976GuZN; not listed by others.
237NP G 835.6 10 0.021
237NP cG RI from 1978Ge17; not listed in 1976GuZN. I|g=0.003 {I1} was
237NP2cG given in 1984Ov02
237NP G 841.5 10 0.004 1
237NP cG E from 1984Ov02; not listed by others.
237NP G 847.4 5 0.027 3 Q
237NP cG E|g and I|g are from 1984Ov02; not listed by others
237NP G 851.6 10 0.038 6
237NP G 854.7 0.020 4
237NP cG E from 1976GuZN; not listed by others.
237NP G 870.7 3 0.046 Q
237NP cG RI from 1978Ge17; not listed in 1976GuZN. I|g=0.079 {I16} from
237NP2cG 1967Gu08, 0.093 {I5} from 1984Ov02. This transition was
237NP3cG considered in 1978Ov01 to be probably from {+154}Eu decay.
237NP G 898.4 0.0072 29
237NP cG E from 1976GuZN; not listed by others.
237NP G 902.5 0.030 5
237NP cG E from 1976GuZN; not listed in 1978Ge17. E|g=901.9 {I3} from
237NPxcG 1984Ov02.
237NP G 912.4 0.025 5
237NP cG E from 1976GuZN; not listed in 1978Ge17. E|g=912.3 {I3} from
237NPxcG 1984Ov02.
237NP G 928.8 0.0055 28
237NP cG E from 1976GuZN; not listed in 1978Ge17. E|g=929.7 {I10} from
237NPxcG 1984Ov02.
237NP G 945.7 0.0056 28
237NP cG E from 1976GuZN; E|g=946.0 {I7} from 1984Ov02.
237NP G 955.7 0.058 6
237NP cG E from 1976GuZN; E|g=955.7 {I4} from 1984Ov02.
237NP G 1014.7 5 0.0064 10
237NP cG E from 1984Ov02; not listed by others.
237NP cG RI from 1984Ov02.
237NP L 0.0 5/2+ 2.144E+6 Y 7 A
237NP cL T From adopted levels.
237NP A 5544.5 16 0.37 3 634 52 R
237NP cA IA The Limitation of Relative Statistical Weight (lwm) method
237NP2cA (1985ZiZY) average of I|a=0.394 {I9} (1998Ya17), 0.34 {I4} (1987Bo25),
237NP2cA 0.36 {I1} (1984Ah06), 0.35 {I8} (1965Mi06), 0.39 {I2} (1955Go57), 0.34
237NP3cA {I1} (1952As04); weighted average 0.368 {I5}. Other: 0.25 (1964Ba26).
237NP L 33.19632 22 7/2+ 4 NS LE A
237NP cL T From 1955Tu13.
237NP A 5511.5 0.225 5 676 16
237NP cA E Average of E|a=5513 (1964Ba26) and E|a=5510 (1963Ba35).
237NP cA IA Weighted average of I|a=0.224 {I7} (1998Ya17), 0.22 {I3}
237NP2cA (1987Bo25), 0.23 {I1} (1984Ah06), 0.21 {I5} (1965Mi06), 0.24 {I2}
237NP3cA (1955Go57), and 0.21 {I2} (1952As04). Other: 0.12 (1964Ba26).
237NP G 33.196 1 1.26E+4 3 M1+E2 0.13 3 185 23
237NPS G LC=138 18 $ MC=35 5
237NP cG E Other energies: 33.1925 {I25} (1998Ko61), 33.199 {I21}
237NP2cG (1955Da02), 33.21 {I2} (1964Wo03), 33.20 {I2} (1966Ko06), 33.197
237NP3cG (1976GuZN), 33.205 {I20} (1978Ge17); E|g=33.195 {I11} from {+237}U
237NPxcG |b{+-} decay.
237NP cG RI other intensities(%): 0.14 (1955Da02),
237NP2cG 0.11 (1957Ma17), 0.104 {I11} (1971Ge11), 0.106 {I11} (1978Ge06), 0.125
237NP3cG {I8} (1983Ah02), 0.12 {I1} (1984Ov02), 0.1233 {I28} (1992Bl07).
237NPB G BM1W=0.00080 11$BE2W=3.6 17
237NP L 59.54090 10 5/2- 67.2 NS 7 B
237NP cL T Weighted average is 67.2 ns 4 of data 63 ns {I5} (1952Be47),
237NP2cL 64.2 ns {I20} (1968Ob02) , 66.7 ns {I7} (1971Ga16), 66.9 ns {I10}
237NP3cL (1972Mc12), and 68.3 ns {I7} (1972Mi23) - uncertainty 0.7 (1%) is
237NP4cL assigned by the evaluator, in 1972Mi23 0.2. The uncertainty 0.7 is the
237NP5cL lowest expt. value. Other value: 63 ns (1964Sa31), 60 ns {I20}
237NP6cL (1955Tu13).
237NP A 5485.56 12 84.8 5 1.268 9 R
237NP cA E|a=5485.60 {I19} in 1992Fr04.
237NP cA IA lwm average of I|a=84.30 {I7} (1998Ya17), 84.7 {I9}
237NP2cA (1987Bo25), 84.0 {I2} (1984Ah06), 85.8 {I7} (1976BaZZ), 85.6 {I10}
237NP3cA (1965Mi06), 85.0 {I8} (1955Go57), and 84.2 {I15} (1952As04); weighted
237NP4cA average 84.79 {I6}. Other: 85.1 (1957Ro20).
237NP G 26.3446 2 2.27E+5 12 E1 8 2 A
237NPS G ELC=6 2 $ EMC=1.6 2
237NP cG E From compilation in 2000He14. 26.3448 {I2} in 1993He18. Other
237NP2cG energies: 26.363 {I14} (1955Da02), 26.356 {I20} (1964Wo03), 26.35 {I5}
237NP3cG (1966Ko06), 26.345 {I1} (1970Ne11), 26.344 (1976GuZN), 26.346 {I6}
237NPxcG (1978Ge06)
237NP cG RI lwm average of 2.06% {I3} (2005Iw01), 2.41% {I5} (1983De11)
237NP2cG and 2.395% {I19} (1992Bl07). Other I|g's (%): 2.5 {I2} (1957Ma17),
237NP3cG 2.23 {I18} (1971Ge11), 2.4 {I1} (1974Ca16), 2.45 {I5} (1976GuZN), 2.54
237NP4cG {I26} (1978Ge06). Other absolute/relative measurements: 1952Be24,
237NP5cG 1955Ja01, 1955Da02, 1971Wa28, 1984Ov02, 1988Co07. 1991BaZS recommend
237NP6cG I|g=2.4% {I1} from weighted average of measured values prior to 1991.
237NPB G BE1W=3.3E-6 11
237NP G 59.5409 1 35.90E+5 7 E1 1.16 7 A
237NPS G ELC=0.84 6 $ EMC=0.226 7 $ ENC+=0.094 10
237NP cG E From compilation in 2000He14. 59.5412 {I1} in 1993He18. Other
237NP2cG energies: 59.568 {I17} (1955Da02), 59.59 (1959Sa10), 59.57 {I2}
237NP3cG (1966Ko06), 59.537 {I1} (1968Je01), 59.536 {I3} (1976GuZN).
237NP cG RI Weighted average of (%): 38.87 {I17} (2005Iw01),
237NP2cG 35.3 {I6} (|a|g)(1969Pe17), 35.9 {I4} (1971GuZY), 36.3 {I4} (4|p
237NP3cG |a|g)(1975Le09), 35.5 {I3} (4|p |a|g)(1976Pl05), 35.82 {I12}
237NP4cG (1983Hu04), 36.36 {I17} (1987De22), 36.03 {I25} (1992Bl07), 35.6 {I2}
237NP5cG (1992Ma16). Other values: 40.0 {I15} (1952Be24), 35.9 (1957Ma17), 34.6
237NP6cG {I7} (4|p |a|g)(1965Mc12). See also 1955Ja01, 1965Mi06. I|g=36.0% {I4}
237NP7cG was recommended in 1991BaZS from weighted average of I|g's of
237NPxcG 1975Le09, 1976Pl05, 1983Hu04 and 1987De22.
237NPB G BE1W=4.5E-6 4
237NP L 75.900 5 9/2+ A
237NP A 5469 0.04 LT 2158 GT
237NP G 42.704 5 5.5E+2 11(M1+E2) 0.13 AP 80 AP
237NPS G LC AP 59 $ MC AP 15
237NP cG E From 1998Ko61. 42.73 {I5} (1978Ge06,1978Ge17), 42.81
237NP2cG (1959Sa10); 42.57 {I30} from {+237}Np Coulomb excitation.
237NP cG RI measured in 1978Ge06; not listed in 1976GuZN.
237NP cG |d=0.13 is expected from |d(33.2|g)=0.13, if the strong
237NP2cG coupling collective model (see 1953Bo25) is assumed valid for
237NP3cG the intraband transitions. The author of 1959Sa10 lists L3/L1|?4
237NP4cG and proposes M3 multipolarity. This ratio gives |d|?0.86 for
237NP5cG M1+E2 multipolarity. However, |d=0.86 yields |a=401 and |a(L)=294, and
237NP6cG these are not consistent with the intensity balance at the 75.92 level
237NP7cG and nonobservation of its L-conversion lines in {+237}Pu |e decay.
237NP G 75.8 2 59 AP(E2) 54.6
237NPS G LC= 39.4 $MC= 11.0 $NC+= 4.17
237NP cG E from 1966Ko06, 1959Sa10.
237NP cG RI calculated by the evaluator from
237NP2cG I|g(75.8|g)/I|g(42.7|g)=3/28, as measured in Coulomb excitation, and
237NPxcG I|g(42.7|g)=550.
237NP L 102.959 3 7/2- B
237NP A 5442.80 13 13.1 3 4.61 11 R
237NP cA IA lwm average of I|a=13.40 {I8} (1998Ya17), 13.0 {I3}
237NP2cA (1987Bo25), 13.1 {I7} (1984Ah06), 12.83 {I8} (1976BaZZ), 12.3 {I6}
237NP3cA (1965Mi06), 12.8 {I5} (1955Go57), and 13.6 {I14} (1952As04); weighted
237NPxcA average 13.10 {I6}.
237NP G 27.020 7 ?
237NP cG E From 1998Ko61. 27.03 keV in 1959Sa10.
237NP2 G FL=75.900
237NP G 43.420 3 73E+2 8 M1+E2 0.41 2 168 8
237NPS G LC=124 7 $ MC=32.8 18
237NP cG E From 1998Ko61. 43.423 {I10} (1978Ge06,1978Ge17).
237NP cG RI From 1978Ge06; this transition was not listed in 1976GuZN,
237NP2cG but I|g=91|*10{+2} {I19} was given in their earlier work (1971GuZY).
237NP3cG Other intensities (1|*10{+2}): 90 (1955Da02), 73 {I7} (1957Ma17), 57
237NP4cG {I18} (1971Ge11), 66 {I5} (1984Ov02), 65.4 {I29} (1992Bl07).
237NP G 69.76 3 290 40 (E1) 0.336
237NPS G LC=0.252 $ MC=0.0621 $ NC+=0.0219
237NP cG RI from 1978Ge06; this |g was not listed in 1976GuZN, but
237NP2cG I|g=201 {I13} was given in their earlier work (1971GuZY).
237NP G 102.98 2 1.95E+3 4 E1 0.121
237NPS G LC= 0.0908 $ MC=0.0222 $ NC+=0.00798
237NP cG RI other intensities (1|*10{+3}): 1.9 {I3} (1966Le13),
237NP2cG 1.5 {I5} (1966Mi05), 2.1 {I3} (1967Gu08), 2.52 {I18} (1978Ge06), 2.1
237NPxcG {I2} (1984Ov02)
237NP L 129.99 3 11/2+ A
237NP A 5416.5 0.01 AP 4205 AP
237NP cA E Average of E|a=5517 (1964Ba26) and E|a=5516 (1963Ba35).
237NP G 54.0 P S
237NP cG The ratio of I(|g+ce)(54.0|g)/I(|g+ce)(96.7|g)=89/11,
237NP2cG deduced in (p,2n|g) reaction, yields I(|g+ce)(54.0|g)=757, if
237NPxcG I(|g+ce)(96.7|g)=94 {I32}.
237NP cG I|g|?21 from Alaga rule and I|g(95|g)=4.7, if
237NP2cG |d(54.1|g)|?0.13 (the interband transition 33.2|g has |d=0.13 {I3}).
237NP G 96.7 2 ?
237NP cG E from Coulomb excitation and {+238}U(p,2n|g) reaction.
237NP2cG This transition was seen only in 1966Ko06 ({+241}Am |a decay) of energy
237NP3cG 95.0 {I2}. E|g=96.8 from level scheme.
237NP cG I|g=4.7 {I16} from Ice(L2)=37 {I12} (1966Ko06) and
237NP2cG |a(L2)=7.90 (E2 theory). I(|g+ce)=94 {I32} from I|g=4.7 {I16} and
237NPxcG |a(E2)=18.9.
237NP L 158.500 11 9/2- B
237NP A 5388 1.66 2 17.23 22
237NP cA E Average of E|a=5589 (1964Ba26) and E|a=5587 (1963Ba35).
237NP cA IA Weighted average of I|a=1.67 {I2} (1998Ya17), 1.6 {I1}
237NP2cA (1987Bo25), 1.65 {I8} (1984Ah06), 1.5 {I3} (1965Mi06), 1.66 {I5}
237NP3cA (1955Go57), and 1.42 {I15} (1952As04). Other value: 1.33 (1964Ba26).
237NP G 55.56 2 18.1E+2 18 M1+E2 0.46 4 67 6
237NPS G LC=49 4 $ MC=13.1 11 $ NC+=4.9 5
237NP cG RI from 1978Ge06; this transition was not listed in 1976GuZN.
237NP2cG 1840 {I240} (1992Bl07).
237NP G 98.97 2 2.03E+3 4 E2 15.6
237NPS G LC=11.3 $ MC= 3.13 $ NC+=1.20
237NP cG E other energies: 99.00 {I4} (1964Wo03),
237NP2cG 98.97 {I3} (1966Ko06), 98.951 {I5} (1976GuZN).
237NP cG RI other intensities (1|*10{+3}): 2.4 {I3} (1966Le13),
237NP2cG 1.9 {I6} (1966Mi05), 2.0 {I3} (1967Gu08), 2.9 {I2} (1978Ge06), 1.9
237NPxcG {I2} (1984Ov02).
237NP G 125.30 2 408 9 [E1] 0.306
237NPS G KC=0.233 $ LC=0.0545 $ MC=0.0133 $ NC+=0.00480
237NP L 191.55 6 13/2+ A
237NP G 61.46 S S
237NP G 115.54
237NP cG E from 1979Ar11; not observed by others.
237NP L 226.005 8 11/2- B
237NP A 5322 0.015 5 7.6E2 26
237NP G 67.45 5 42 10 (M1+E2) 0.46 12 31 6
237NPS G LC=23 5 $ MC=5.9 13 $ NC+=2.2 5
237NP cG RI from 1978Ge06; this transition was not listed in 1976GuZN.
237NP G 123.052 7 100 3 E2 5.90
237NPS G KC= 0.188 $ LC=4.13 $ MC=1.15 $ NC+=0.438
237NP cG E From 1998Ko61. 123.01 {I2} (1978Ge06,1978Ge17).
237NP G 150.04 3 7.40 21 [E1] 0.200
237NPS G KC=0.154 $ LC=0.0343 $ MC=0.00837 $ NC+=0.00302
237NP L 267.566 17 3/2- D
237NP A 5279 0.0005 12723
237NP cA E Q(|a)=5637.82 ({+241}Am) and level energy gives E|a=5281.
237NP G 164.69 4 6.67 24 E2 1.74
237NPS G KC=0.199 $ LC=1.12 $ MC=0.309 $ NC+=0.117
237NP cG M from {+237}U |b{+-} decay.
237NP G 208.01 3 79.1 17 M1+E2 +0.156 5 3.18
237NPS G KC=2.50 $ LC=0.504 $ MC=0.123 $ NC+=0.0457
237NP cG RI other intensities: 56 {I16} (1966Le13),
237NP2cG 64 {I13} (1966Mi05), 75 {I4} (1967Gu08), 77 {I4} (1984Ov02).
237NP G 234.33 0.066 27 M2 8.66
237NPS G KC=5.87 $ LC=2.05 $ MC=0.537 $ NC+=0.205
237NP cG E from 1976GuZN; not seen in 1978Ge17.
237NP2cG E|g=234.40 {I4} was measured in {+237}U |b{+-} decay.
237NP cG M from {+237}U |b{+-} decay.
237NP G 267.58 5 2.63 8 E1+M2 0.490 15 1.11 6
237NPS G KC=0.77 4 $ LC=0.250 12 $ MC=0.065 4 $ NC+=0.0246 12
237NP cG M E1+M2 with M2/E1=0.240 {I15} from {+237}U decay.
237NP L 281.363 20 1/2- D
237NP G 13.81 2 B S
237NP G 221.80 4 B S
237NP L 305.05 3 13/2- B
237NP A 5244 0.0024 1564
237NP G 79.1 S S
237NP G 146.55 3 46.1 11 E2 2.80
237NPS G KC= 0.214 $ LC=1.87 $ MC=0.519 $ NC+=0.198
237NP G 175.07 4 1.82 10 [E1] 0.1385
237NPS G KC=0.107 $ LC=0.0232 $ MC=0.0057 $ NC+=0.00204
237NP L 316.8 2 ?
237NP A 5232 T ?
237NP G 316.8 2 0.005 LE ?
237NP cG RI from 1978Ge17; not listed in 1976GuZN.
237NP L 324.421 23(7/2-) D
237NP A 5223 0.0013 2194
237NP cA E Q(|a)=5637.82 ({+241}Am) and level energy gives E|a=5225.
237NP G 56.8 I S
237NP G 165.81 6 2.32 11 [M1+E2] 3.9 22
237NPS G KC=2.5 23 $ LC=1.02 6 $ MC=0.27 4 $ NC+=0.100 14
237NP G 221.46 3 4.24 10 [M1+E2] 1.6 11
237NPS G KC=1.1 10 $ LC=0.37 6 $ MC=0.095 9 $ NC+=0.035 3
237NP G 249.00 15 0.054 [E1] 0.061
237NP2 G FL=75.900
237NP cG E other values: 248.0 {I4} (1968Ka09), 249.05 (1979Ar11);
237NP2cG E|g=248.50 {I7} from level scheme.
237NP cG RI from 1978Ge17; not listed in 1976GuZN.
237NP G 264.89 6 0.90 4 [M1+E2] 1.0 7 *
237NP G 291.30 20 0.31 3 [E1] 0.0433
237NP L 332.382 18 1/2+ E
237NP A 5217 0.000011 2.5E5 26
237NP cA E,IA From 1965Mi06.
237NP G 51.01 3 2.6 12 E1 0.767 B S
237NP cG RI calculated by the evaluator from I(51|g)/I(332|g)
237NP2cG =98 {I44}/555 {I22}, as measured in {+237}U |b{+-} decay, and
237NP3cG I(332|g)=14.9 {I3}.
237NPS G LC=0.574 $ MC=0.143 $ NC+=0.0502
237NP cG M from {+237}U |b{+-} decay.
237NP G 64.83 2 14.5 18 E1 0.408 B S
237NP cG RI calculated by the evaluator from
237NP2cG I(64.8|g)/I(332|g)=5.4 {I6}/5.55 {I22}, as measured
237NP3cG in {+237}U |b{+-} decay, and I(332|g)=14.9 {I3}.
237NPS G LC=0.306 $ MC=0.0754 $ NC+=0.0265
237NP cG M from {+237}U |b{+-} decay.
237NP G 332.35 3 14.9 3 E2 0.150
237NPS G KC= 0.0640 $LC= 0.0624 $MC=0.0169 $NC+=0.00639
237NP L 359.92 20(5/2-) D
237NP A 5192 0.0006 2860
237NP cA E From 1963Ba35. Q(|a)=5637.82 ({+241}Am) and level energy
237NP2cA gives E|a=5290.
237NP G 92.1 I S
237NP G 300.13 6 ?
237NP cG Transition is obscured by {+233}Pa |g.
237NP L 368.615 20 5/2+ E
237NP A 5182 0.0009 1682
237NP G 292.77 6 1.42 5 [E2] 0.220
237NPS G KC=0.0808 $ LC=0.101 $ MC=0.0275 $ NC+=0.0104
237NP G 309.1 3 0.14 [E1] 0.0380
237NP cG RI from 1978Ge17; not listed in 1976GuZN.
237NP G 335.37 3 49.6 10 M1+E2 0.46 17 0.74 8
237NPS G KC= 0.57 7 $LC= 0.121 8 $MC= 0.0296 18$NC+= 0.0110 7
237NP G 368.65 3 21.7 5 M1(+E2) 0.31 LT 0.64 2
237NPS G KC=0.51 2 $ LC=0.100 3 $ MC=0.0244 6 $ NC+=0.0091 2
237NP L 370.931 23 3/2+ E
237NP A 5178 0.0003 4881
237NP cA E Q(|a)=5637.82 ({+241}Am) and level energy gives E|a=5280.
237NP G 38.54 3 B S
237NP G 337.7 2 0.429 23(E2) 0.143
237NP cG M from {+237}U |b{+-} decay
237NP G 370.94 3 5.23 12M1+E2 0.43 +7-21 0.57 2
237NPS G KC=0.45 6 $ LC=0.092 3 $ MC=0.0225 6 $ NC+=0.0084 6
237NP cG M from {+237}U |b{+-} decay.
237NP L 395.57 3 15/2- B
237NP A 5155 0.0007 1465
237NP cA E From 1963Ba35.
237NP G 169.56 3 17.3 4 E2 1.55
237NPS G KC= 0.193 $ LC= 0.980 $ MC= 0.271 $ NC+= 0.103
237NP G 204.06 6 0.290 19 [E1] 0.097
237NP L 418.2 1 ?
237NP cL E Deduced from E|a=5133 and Q(|a)=5637.82 {I12} ({+241}Am) by
237NPxcL evaluator.
237NP A 5137 0.00032 2445
237NP cA E From 1963Ba35.
237NP L 434.12 5(11/2-) D
237NP A 5114 0.0004 1459
237NP cA E Q(|a)=5637.82 ({+241}Am) and level energy gives E|a=5117.
237NP G 109.70 7 0.49 [E2] 9.67
237NPS G LC=6.98 $ MC=1.94 $ NC+=0.742
237NP cG RI from 1978Ge17; not listed in 1976GuZN.
237NP G 129.2
237NP cG E from 1979Ar11; not observed by others.
237NP G 275.77 8 0.66 4 [M1+E2] 0.9 6
237NP G 304.21 20 0.101 21 [E1] 0.0393
237NP G 358.25 20 0.120 24 [E1] 0.0276
237NP L 444.78 10 ?
237NP A 5106 T ?
237NP G 120.36 8 0.45 ?
237NP cG RI from 1978Ge17; not listed in others.
237NP L 452.547 22 9/2+ E
237NP A 5096 0.0004 AP 1112 AP
237NP cA E Q(|a)=5637.82 ({+241}Am) and level energy gives E|a=5099.
237NP G 260.80 15 0.121 19 [E2] 0.320 *
237NP G 322.52 3 15.18 32(M1+E2) 0.6 AP 0.75 21 *
237NPS G KC=0.58 18 $ LC=0.13 2 $ MC=0.032 4 $ NC+=0.012 1
237NP G 376.65 3 13.83 30 (M1) 0.627
237NPS G KC=0.497 $ LC=0.0973 $ MC=0.0235 $ NC+=0.00874
237NP G 419.33 4 2.87 8 [M1+E2] 0.27 20
237NPS G KC=0.21 16 $ LC=0.050 22 $ MC=0.012 5 $ NC+=0.0046 19
237NP G 452.6 2 0.240 25 [E2] 0.065
237NP L 459.694 24 7/2+ E
237NP A 5089 0.0004 AP 1000 AP
237NP cA E Q(|a)=5637.82 ({+241}Am) and level energy gives E|a=5092.
237NP G 135.3
237NP cG E from 1979Ar11; not seen by others.
237NP G 383.81 3 2.82 7 [M1+E2] 0.35 25
237NPS G KC=0.26 21 $ LC=0.065 28 $ MC=0.016 5 $ NC+=0.006 2
237NP G 426.47 4 2.46 7 [M1+E2] 0.27 18
237NPS G KC=0.20 16 $ LC=0.047 22 $ MC=0.012 6 $ NC+=0.0044 18
237NP G 459.68 10 0.363 27[M1+E2] 0.21 15
237NP L 486.22 9(9/2-) D
237NP A 5068 0.00014 1927
237NP cA E Q(|a)=5637.82 ({+241}Am) and level energy gives E|a=5066.
237NP G 161.54 10 0.15 [M1] 6.61
237NPS G KC=5.23 $ LC=1.04 $ MC=0.252 $ NC+=0.094
237NP cG RI from 1978Ge17; not listed in 1976GuZN.
237NP G 260.80 15 *
237NP2 G FL=226.005
237NP L 497.01 5 17/2- B
237NP A 5055 S
237NP cA E Expected in 1968Ka09. E|a deduced by the evaluator.
237NP G 191.96 4 2.16 10[E2] 0.954
237NPS G KC=0.164 $ LC=0.572 $ MC=0.158 $ NC+=0.060
237NP L 514.20 5(3/2-) G
237NP G 154.27 20 0.054 [M1] 7.54
237NP cG RI from 1978Ge17; not listed in 1976GuZN. |g was observed
237NP2cG in coincidence spectrum and I|g=0.8 was given in 1968Ka09.
237NP G 232.81 5 0.464 30 [M1] 2.36
237NP G 246.73 10 0.242 25 [M1] 2.01
237NP G 454.66 8 0.97 4 [M1] 0.376 *
237NP G 514.0 5 0.258 27 [E1] 0.0133
237NP L 546.12 6(5/2-) G
237NP A 5004 0.0001 1094
237NP G 31.4 I S
237NP G 264.89 6 *
237NP2 G FL=281.363
237NP G 278.04 15 0.044 [M1] 1.44
237NP cG RI from 1978Ge17; not listed in others.
237NP G 512.5 3 0.115 23 [E1] 0.0134
237NP G 545.4 3 0.074 [E1] 0.01119
237NP cG RI from 1978Ge17; not listed in others.
237NP L 590.09 4(7/2-) G
237NP A 4964 T ?
237NP G 322.52 3 *
237NP G 487.3 3 0.044 [M1] 0.312 *
237NP cG RI from 1978Ge17; not listed in others.
237NP G 590.28 15 0.286 21 [E1] 0.0102 *
237NP L 592.33 7 13/2+ E
237NP A 4962 T ?
237NP cA An |a group with E|a=E|a(to g.s.)-585 {I6}, corresponding to
237NP2cA |a transition to a level (or levels) at 595 {I6} keV, was observed
237NP2cA in 1968Ka09 in (|g)(|a) spectrum. This |a group probably includes
237NP3cA |a's to the 590.09- and 597.9-keV levels.
237NP G 139.44 8 0.53 11 [E2] 3.45
237NPS G KC=0.215 $ LC=2.33 $ MC=0.649 $ NC+=0.247
237NP2 G FL=452.547
237NP G 159.26 20 0.14 5 [E1] 0.174
237NP2 G FL=434.12
237NP G 197.0 2 0.049 [E1] 0.105
237NP cG RI from 1978Ge17; not listed in 1976GuZN. E|g=195.9 {I2},
237NP2cG I|g=0.86 {I9} was given in 1984Ov02.
237NP G 401.3 30 0.049 [M1+E2] 0.31 22
237NP cG RI from 1978Ge17; not listed by others.
237NP G 463.22 20 0.1 [M1+E2] 0.21 15
237NP2 G FL=129.99
237NP cG RI from 1978Ge17; not listed by others.
237NP L 597.99 9 11/2+ E
237NP A 4956 T ?
237NP G 138.5
237NP cG E from 1979Ar11; not observed by others.
237NP G 406.35 15 0.145 22 [M1+E2] 0.30 21
237NP G 468.12 15 0.288 21 [M1+E2] 0.20 15
237NP G 522.06 15 0.095 29 [M1+E2] 0.15 11
237NP L 646.03 17(9/2-) G
237NP G 487.3 3 *
237NP G 586.59 20 0.131 20 [E2] 0.0350
237NP L 666.20 9(5/2+,7/2-)
237NP A 4889 T ?
237NP G 398.64 15 0.20 0.056 34
237NP cG RI from 1978Ge17; not given in 1976GuZN, but I|g=0.15 was listed
237NP2cG in 1971GuZY.
237NP cG M E1 or E2 from decay scheme.
237NP G 590.28 15 *
237NP G 632.93 15 0.126 19 [D] 0.08 7
237NP G 666.5 3 0.049 [D] 0.07 6
237NP cG RI from 1978Ge17; not listed by others.
237NP L 721.961 13 5/2- F
237NP A 4834 0.0007 10
237NP G 454.66 8 * ?
237NP G 563.05 30 0.074 [E2] 0.0383
237NP cG RI from 1978Ge17; not listed in 1976GuZN.
237NP G 619.01 2 5.94 6 [M1+E2] 0.98 7
237NP G 662.40 2 36.4 8 (E0+M1+E2) 0.23 5
237NP cG CC |a(K)exp=0.18 {I4}, K/(L+M+..)=4 {I1} from (|a)(ce) and
237NP2cG (|a)(|g) coincidence measurements of 1966Le13.
237NP G 688.72 4 3.25 8 [E1] 0.0078
237NP G 722.01 3 19.6 4 [E1] 0.0070 *
237NP L 755.685 19 7/2- F
237NP A 4800 8.6E-5 47
237NP G 597.48 8 0.741 33 [M1+E2] 0.11 7
237NP2 G FL=158.500
237NP G 653.02 4 3.77 11 [M1+E2] 0.085 6
237NP2 G FL=102.959
237NP G 680.10 10 0.313 17 [E1] 0.0078
237NP G 696.60 5 0.534 20 [M1+E2] 0.072 5 *
237NP2 G FL=59.54090
237NP G 722.01 3 *
237NP2 G FL=33.19632
237NP G 755.90 5 0.760 28 [E1] 0.0064
237NP L 770.57 5
237NP G 446.43 15 0.049
237NP cG RI from 1978Ge17; not listed by others.
237NP G 737.34 5 0.800 24
237NP G 770.57 10 0.474 21
237NP L 799.82 4 9/2- F
237NP A 4758 0.00001 LT 198 GT
237NP cA E Deduced from Q(|a) and level energy, E|a=4754 in 1965Mi06.
237NP cA IA 0.000014