52FE 53NI ECP DECAY:57 MS:XUNDL-4 2016SU10 201603 52FE c Compiled (unevaluated) dataset from 2016Su10: 52FE2c Phys Lett B756, 323 (2016) 52FE c See also 2013Su07: Phys Rev C87, 024312 (2013) from the same group 52FE c Compiled by B. Singh (McMaster), March 29, 2016 52FE c 2016Su10: {+58}Ni{+25+} primary beam at E=68.3 MeV/nucleon provided by 52FE2c the Heavy Ion Research Facility in Lanzhou (HIRFL). Target=503 |mm 52FE3c thick {+9}Be. The {+53}Ni fragments were separated and focused using 52FE3c the Radioactive Ion Beam Line, Lanzhou (RIBLL) facility. Measured 52FE4c |b-delayed protons, half-life of {+53}Ni decay, (proton)|g-coin, E|g, 52FE5c I|g, |g|g-coin using double-sided silicon strip detectors (DSSSDs) 52FE6c for particle detection and four segmented clover Ge detectors for 52FE7c |g rays. FWHM=50 keV for the proton spectrum. Comparison with 52FE8c shell-model calculations 52FE cDP$Delayed proton branch from the 4325 level to the g.s. of {+52}Fe, 52FE2cDP expected at 2710 keV was searched but no evidence was found 52FE cDPE$The proton energies are in the center-of-mass system. 52FE cDPIP$Absolute intensities (per 100 decays of {+53}Ni) are determined 52FE2cDP (2016Su10) by normalizing to the total |b-decay events and number of 52FE3cDP {+53}Ni implants 53NI P 0 7/2- 57 MS 3 11412 26 53NI cP T$Measured by 2016Su10. Note that in decay-scheme Fig. 5 of 2016Su10, 53NI2cP half-life of 55.2 ms is cited from 2007Do17 53NI cP QP$From 2012Wa38: AME-2012 52FE N 0.22 1 1.0 52FE cN BR$%|ep=22 {I1} (2016Su10) 52FE L 0 0+ 52FE L 849 2+ 52FE DP 1861 7 1.2 LT 4325 ? 52FE cDPE$derived from known level energies. 52FE cDPIP$2016Su10 give <0.9% {I3}, an uncertain very weak proton branch 52FE DP 1921 8 5.8 7 4385 52FE cDPEI$4385 level is not the IAS as proposed earlier in 2007Do17 52FE2cDP (Nucl. Phys. A792, 18) 52FE G 849 52FE 9BE(58NI,X):RADIUS:XUNDL-5 2016MI27 201701 52FE c Compiled (unevaluated) dataset from 2016Mi27: 52FE2c Phys Rev Lett 117, 252501 (2016) 52FE c Compiled by B. Singh (McMaster), Jan 6, 2017 52FE c Measurement of mean-square charge radius using a novel technique of 52FE2c bunched-beam collinear laser spectroscopy on a radioactive ion beam 52FE3c obtained from in-flight separation, followed by stopping in a gas. 52FE c 2016Mi27: 30-keV {+52}Fe beam obtained from fragmentation of 52FE2c 160 MeV/nucleon {+58}Ni beam by {+9}Be target. The {+52}Fe ions were 52FE3c separated using A1900 fragment separator at NSCL-MSU cyclotron 52FE4c facility. The ions were then thermalized in a gas stopper, and 52FE5c extracted as singly charged {+52}Fe ion beam which was finally 52FE6c transported to a beam cooler and laser spectroscopy (BECOLA) system, 52FE7c where the beam was injected into a radio frequency quadrupole cooler 52FE8c and buncher. Measured hyperfine structure spectrum together with 52FE9c that of {+56}Fe, whose beam was also used in the BECOLA system 52FEAc throughout the experiment. Deduced isotope shifts from the atomic 52FEBc hyperfine spectra, and subsequently differential mean-square charge 52FECc radius using multiconfiguration Dirac-Fock (MCDF) method. Comparison 52FEDc with nuclear density functional theory, with Fayans and Skyrme energy 52FEEc density functionals 52FE L 0 0+ 52FE cL $Measured isotope shift: |d|n({+56}Fe,{+52}Fe)=-1.839 GHz {I3}(stat) 52FE2cL {I6}(syst) (2016Mi27) 52FE cL $Measured differential charge radius: |d({+56}Fe,{+52}Fe)=-0.034 52FE2cL fm{+2} {I13} {I110}; |d({+54}Fe,{+52}Fe)=+0.282 fm{+2} {I14} 52FE3cL {I73} (2016Mi27); in each case, the first uncertainty is the quadratic 52FE4cL sum of the statistical and systematic uncertainties for isotope shifts, 52FE5cL and the second uncertainty is from atomic factors 52FE 27AL(28SI,2NPG):T1/2:XUNDL-6 2017AR09 201803 52FE c Compiled (unevaluated) dataset from 2017Ar09: 52FE2c Phys Lett B772, 599 (2017). 52FE c Compiled by B. Singh (McMaster) August 11, 2017. 52FE c 2017Ar09: E({+28}Si)=86 MeV. Measured E|g, |g|g-coin, lifetime of the 52FE2c first 2+ state by recoil-distance Doppler-shift (RDDS) method using an 52FE3c array of 12 HPGe detectors and Cologne coincidence-plunger device. 52FE4c Target thickness=0.58 mg/cm{+2}. Recoiling nuclei came out of the 52FE5c target at 3.1% of the speed of light, and were stopped in 9.6 mg/cm{+2} 52FE6c thick gold foil. Data were recorded at 7 target-to-stopper distances. 52FE7c Comparison of deduced B(E2) values with shell-model calculations with 52FE8c four interactions. 52FE cG E$From {+52}Fe Adopted dataset in the ENSDF database 52FE2cG (July 2015 update), energies are rounded values. 52FE cL E,J$From {+52}Fe Adopted dataset in the ENSDF database (July 2015 52FE2cL update), energies are rounded values. 52FE L 0.0 0+ 52FE L 849.4 2+ 4.85 PS 26 52FE cL T$measured |t=7.00 ps {I24}(stat) {I28}(syst) (from text in 2017Ar09; 52FE2cL rounded to 7.0 ps {I4} in authors' Table 2); narrow gate was set on the 52FE3cL shifted part of the 1535|g (first 4+ to first 2+ transition), and the 52FE4cL lifetime was determined using the upstream detector ring, since a 52FE5cL contaminant in the range of the shifted part of the 849|g (first 2+ to 52FE6cL g.s. transition) did not permit the lifetime analysis in the forward 52FE7cL detector ring. Measured value in the present work is compared to the 52FE8cL previously measured mean lifetime |t=11.3 ps {I14} (2004Yu07: 52FE9cL Phys. Rev. C70, 034301). The analysis using only the one detector-ring 52FEAcL combination was checked for consistency with an independent analysis of 52FEBcL the lifetime of the first 2+ state in {+50}Cr. 52FE cL $B(E2|_: 4+ to 2+)/B(E2|_: 2+ to 0+)=1.14 {I+32-21} (2017Ar09), where 52FE2cL authors used B(E2: 4+ to 2+) from {+52}Fe Adopted dataset in the ENSDF 52FE3cL database. Compiler obtains 1.14 {I+41-26} using the limiting values. 52FE4cL The value from 2017Ar09 is compared to the previous B(E2) ratio of 52FE5cL 1.83 {I+57-38} (compiler obtains 1.85 {I+88-51} using limiting values). 52FE G 849.4 E2 52FE2 G BE2=0.0265 +15-13 (2017Ar09) 52FE cG $B(E2) in e{+2}b{+2} units. Other: B(E2)=0.0163 {I20}, using 52FE2cG mean lifetime |t=11.3 ps {I14} (2004Yu07). Note that the two values 52FE3cG differ by 4-5 standard deviations 52FE L 2384.5 4+ 0.22 PS 5 52FE cL T$from {+52}Fe Adopted dataset in the ENSDF database 52FE G 1535.3 E2 52FE2 G BE2=0.0302 +89-56 52FE cG $B(E2) deduced by compiler from T{-1/2}=0.22 ps {I5} and 52FE2cG E|g=1535.3 keV. 52FE 52CO EC DECAY:112 MS:XUNDL-7 2016OR08 201811 52FE c Compiled (unevaluated) dataset from 2016Or08: 52FE2c Phys Rev C 94, 044315 (2016) 52FE c Compiled by B. Singh (McMaster), Jan 12, 2017 52FE c 2016Or08: {+52}Co obtained from {+58}Ni{+26+} primary beam which was 52FE2c accelerated to 74.5 MeV/nucleon, and fragmented on a 200 |mm thick 52FE3c natural Ni target, and using LISE3 separator at GANIL. The {+52}Co ions 52FE4c were implanted into a double-side silicon strip detector (DSSSD) of 300 52FE5c |mm thickness, surrounded by four EXOGAM Ge clovers to detect |g rays. 52FE6c Measured fragment yields, E|g, I|g, half-lives of ground state and 52FE7c isomer of {+52}Co 52FE cE TI(X)$Combined for 4872+5140 levels 52FE cL E$Deduced by compiler from least-squares fit to E|g values 52FE cL J$As given in 2016Or08 52CO P 0 6+ 112 MS 3 13971 11 52CO cP J$From 2016Or08 52CO cP $T=1, T{-z}=-1 52CO cP T$Measured by 2016Or08, from correlation-time spectrum from summed 52CO2cP spectra of 1329-, 1535- and 1942-keV |g rays from the decay of 52CO3cP {+52}Co to {+52}Fe. 52CO cP QP$From mass excess=-48332 {I7} for {+52}Fe (2012Wa38: AME-2012) and 52CO2cP measured mass excess=-34361 {I8} (2016Xu10: Phys. Rev. Lett. 117, 52CO3cP 182503). Others: 13845 {I52} (2016Or08), 14340 {I200} (syst,2012Wa38) 52FE N 1 1 1 52FE cN NR$Intensities per 100 decays of {+52}Co are given by 2016Or08. 52FE2cN Normalization was obtained by subtracting summed relative intensity of 52FE3cN 1535|g and 2735|g from the relative intensity of 849|g, which gives 52FE4cN extra relative feeding of 17% {I31} for the 849|g, contributed by 52FE5cN the 2+ isomeric activity of {+52}Co. 52FE PN 4 52FE L 0 0+ 52FE cL $T=0, T{-z}=0 52FE L 849 1 2+ 52FE G 849 1 100 21 52FE cG $Relative I|g=100 {I26}, contains contribution from the decay of 52FE2cG {+52}Co g.s. and {+52}Co isomer 52FE L 2384 1 4+ 52FE G 1535 1 81 21 52FE cG $Relative I|g=67 {I17} 52FE L 3585 2 4+ 52FE G 2735 5 19 3 52FE cG $Relative I|g=16 {I3} 52FE L 4327 2 6+ 52FE E 14 LT 0.0088 LT 4.5 GT 14 LT ? 52FES E EAV=4095.1 56$CK=0.0005620 2$CL=5.951E-5 23$CM+=1.039E-5 4 52FE cE TI$3 {I11} (2016Or08) 52FE cE $B(G-t)=0.03 {i12} 52FE G 1942 1 32 8 52FE cG $Relative I|g=27 {I7} 52FE L 4873 2 6+ 52FE E 50 LE 0.038 LE 3.8 GE 50 LEX 52FES E EAV=3825.2 56$CK=0.000682 3$CL=7.22E-5 3$CM+=1.261E-5 6 52FE G 1288 1 10 3 52FE cG $Relative I|g=8 {I2} 52FE G 2488 5 52FE cG $I|g(2488)/I|g(1288)=4.4 {I10} in {+52}Fe Adopted dataset in the ENSDF 52FE2cG database (July 2015 update). 52FE L 5141 3 (5-) 52FE cL $A 740.6|g from this level reported in the literature is not seen in 52FE2cL the present work 52FE E X 52FE G 1556 1 9 2 52FE cG $Relative I|g=7 {I2} 52FE G 2755 5 52FE cG $I|g(2755)/I|g(1556)=10 {I5} in {+52}Fe Adopted dataset in the ENSDF 52FE2cG database (July 2015 update). There is also a 740.6|g to a 4400 level 52FE3cG with an intensity of about 50% that of the 2755|g 52FE L 5655 2 6+ 52FE2 L ISPIN=1 52FE cL E$IAS of {+52}Co g.s. with J|p=6+ 52FE cL $A possible 516|g to 5141 level would be masked by annihilation 52FE2cL radiation at 511 keV 52FE E 47 9 0.049 9 3.60 9 47 9 52FES E EAV=3439.2 56$CK=0.000922 5$CL=9.76E-5 5$CM+=1.705E-5 8 52FE cE $B(F)=1.7 {i3} 52FE G 782 1 18 5 52FE cG $Relative I|g=15 {I4} 52FE G 1329 1 29 8 52FE cG $Relative I|g=24 {I6} 52FE 52CO EC DECAY:102 MS:XUNDL-8 2016OR08 201811 52FE c Compiled (unevaluated) dataset from 2016Or08: 52FE2c Phys Rev C 94, 044315 (2016) 52FE c Compiled by B. Singh (McMaster), Jan 12, 2017 52FE c 2016Or08: {+52}Co obtained from {+58}Ni{+26+} primary beam which was 52FE2c accelerated to 74.5 MeV/nucleon, and fragmented on a 200 |mm thick 52FE3c natural Ni target, and using LISE3 separator at GANIL. The {+52}Co ions 52FE4c were implanted into a double-side silicon strip detector (DSSSD) of 300 52FE5c |mm thickness, surrounded by four EXOGAM Ge clovers to detect |g rays. 52FE6c Measured fragment yields, E|g, I|g, half-lives of ground state and 52FE7c isomer of {+52}Co 52FE cE TI(X)$Combined for 6034+6044 levels 52FE cG E(D)$5185|g with I|g=39% {I12} deexcites 6034 and/or 6044 levels 52FE cL E$From E|g values 52FE cL E(I)$IAS of 387-keV, 2+ level in {+52}Co 52FE cL J$As given in 2016Or08 52CO P 387 13 2+ 102 MS 6 13971 11 52CO cP E$From 2016Xu10 (Phys. Rev. Lett. 117, 182503) based on mass 52CO2cP measurements for {+52}Co ground state and isomer. Other: 378 {I50} 52CO3cP in 2016Or08 from analog of 377.749-keV, 2+ isomer in {+52}Mn and 52CO4cP uncertainty of 50 keV for mirror-energy differences 52CO cP J$From 2016Or08 52CO cP T$Measured by 2016Or08, from correlation-time spectrum from 849|g 52CO cP QP$From mass excess=-48332 {I7} for {+52}Fe (2012Wa38: AME-2012) and 52CO2cP measured mass excess=-34361 {I8} (2016Xu10: Phys. Rev. Lett. 117, 52CO3cP 182503). Others: 13845 {I52} (2016Or08), 14340 {I200} (syst,2012Wa38) 52FE N 1 1 AP 1 52FE cN NR$Intensities per 100 decays of {+52}Co isomer are given by 2016Or08. 52FE2cN The gamma intensities were normalized with respect to the 141-keV |g 52FE3cN ray from {+52}Ni to {+52}Co, with its absolute intensity of 43% {I8} 52FE PN 4 52FE L 0 0+ 52FE cL $T=0, T{-z}=0 52FE L 849 1 2+ 52FE E 46 28 0.010 6 4.7 3 46 28 52FES E EAV=6014.1 85$CK=0.0001875 8$CL=1.984E-5 8$CM+=3.465E-6 14 52FE cE $B(G-t)=0.06 {i4} 52FE G 849 1 97 26 52FE cG $Relative I|g=42 {I8} 52FE L 2759 2 2+ 52FE E 12 3 0.0041 10 4.9 1 12 3 52FES E EAV=5064.4 86$CK=0.0003068 1$CL=3.247E-5 16$CM+=5.67E-6 3 52FE cE $B(G-t)=0.05 {i1} 52FE G 1910 1 12 3 52FE cG $Relative I|g=5 {I1} 52FE G 2759 S 52FE cG E$from literature, not seen in the present experiment 52FE cG $I|g(2759)/I|g(1910)=3.1 {I11} in {+52}Fe adopted Levels in the ENSDF 52FE2cG database (July 2015 update) 52FE L 6034 10 2+ I 52FE2 L ISPIN=1 52FE E 39 12 0.040 12 3.6 2 39 12X 52FES E EAV=3443.1 98$CK=0.000919 8$CL=9.73E-5 8$CM+=1.699E-5 14 52FE cE $B(F)=1.6 {i5} 52FE G 5185 10 39 12 * 52FEF G FLAG=D 52FE cG $Relative I|g=17 {I4} 52FE L 6044 5 2+ I 52FE2 L ISPIN=1 52FE E X 52FE G 5185 10 * 52FEF G FLAG=D 52FE 54FE(P,P2N):ISOMER E:XUNDL-9 2017NE05 201801 52FE c Compiled (unevaluated) dataset from 2017Ne05: 52FE2c Jour Phys G44, 065103 (2018) 52FE c Compiled by B. Singh (McMaster), Jan 30, 2017 52FE c 2017Ne05: {+52}Fe isotope produced in {+54}Fe(p,p2n),E=50 MeV reaction 52FE2c at the K-130 cyclotron facility of University of Jyvaskyla. Measured 52FE3c masses of the ground state and isomer of {+52}Fe using JYFLTRAP double 52FE4c Penning trap spectrometer. Deduced energy of the 6+ isomer in {+52}Fe 52FE c Decay modes of g.s. and isomer are from {+52}Fe Adopted Levels in the 52FE2c ENSDF database (July 2015 update) 52FE L 0.0 0+ 8.275 H 8 52FE2 L %EC+%B+=100 52FE L 6960.7 9 12+ 45.9 S 6 M 52FE2 L %EC+%B+=100$%IT=0.021 5 52FE cL E$from measured mass excess=-48330.67 keV {I60} for g.s. of {+52}Fe 52FE2cL and -41370.01 keV {I65} for the 45.9-s, 12+ isomer (2017Ne05). Value 52FE3cL is 6958.0 keV {I4} in {+52}Fe Adopted Levels in the ENSDF database, 52FE4cL based on |g-ray data 52FE cL J$from {+52}Fe Adopted Levels in the ENSDF database 52FE 53CO P DECAY:XUNDL-20 2023SA59 202601 52FE c Compiled (unevaluated) dataset from 2023Sa59: Nat. Commun. 14, 5961 52FE2c (2023). 52FE c Compiled by A.P.D. Ramirez (LLNL) and E.A. McCutchan (NNDC, BNL), 52FE2c March 28, 2025 52FE c 2023Sa59: Experiments on {+53m}Co were performed at two facilities: 52FE2c IGISOL at the University of Jyv~asyl~a, Finland and GANIL, France. At 52FE3c IGISOL, a 40 MeV proton beam was directed onto an enriched {+54}Fe 52FE4c target (1.8 mg/cm{+2} thick) where reaction products were stopped in 52FE5c a helium gas, extracted using an ion guide, separated by a dipole 52FE6c magnet. A radio-frequency quadrupole cooler and buncher was used to 52FE7c cool and bunch the ions. The JYFLTRAP double Penning trap selected 52FE8c {+53m}Co, which were then implanted into a pixelated double-sided 52FE9c silicon strip detector. TASISpec was used for decay detection with an 52FEac inner silicon detector cube for charged-particle detection and an 52FEbc array of HPGe detectors for |g-ray spectroscopy. At GANIL, {+53}Co was 52FEcc produced via projectile fragmentation of a {+58}Ni beam (75 52FEdc MeV/nucleon) on a beryllium target (660 |mm thick). Fragments were 52FEec selected using the LISE3 magnetic spectrometer where about 8% 52FEfc separated {+53}Co ions were in isomeric state {+53m}Co. Proton decay 52FEgc tracking was performed using the ACTAR TPC. 52FE c $ Measured |gp coinc, E(p), and I(p) 52FE c PE,IP,L$ From 2023Sa59. 52FE cL E,J$From Adopted Levels in ENSDF database. 53CO P 3197 29 (19/2-) 245 MS 10 1616.3 17 53CO cP QP$From AME2020. 53CO cP J$From Adopted Levels in ENSDF database. 53CO cP E$From Adopted Levels in ENSDF database. Others: E=3174.3 keV {I10} 53CO2cP from 2010Ka26 and E=3174.1 keV from 2015Sh16. 53CO cP T$From 2023Sa59 by averaging half-lives obtained for different gas 53CO2cP pressure settings of ACTAR TPC (T{-1/2}=239 ms {I21}) and T{-1/2}=247 53CO3cP ms {I12} from Adopted Levels in ENSDF database. 52FE N 0.015 52FE L 0.0 0+ 52FE P1558.9 161.3 1 9 52FE c P$ Partial half-life is 18.8 s {I16} (2023Sa59). 52FE L 849.45 2+ 52FE P709.5 160.025 4 7 52FE c P$ Partial half-life is 980 s {I162} (2023Sa59).