144CS BE(238U,F):T1/2:XUNDL-3 2017WU04 201703 144CS c Compiled (unevaluated) dataset from 2017Wu04: 144CS2c Phys Rev Lett 118, 072701 (2017) 144CS c Compiled by F.G. Kondev (ANL); February 17, 2017 144CS c 2017Wu04: The {+144}Cs nuclide was produced at the RIBF-RIKEN facility 144CS2c using the {+9}Be({+238}U,F) reaction at E=345 MeV/nucleon. Two 144CS3c experiments, optimized for the transmission of {+158}Nd and {+170}Dy 144CS4c ions, were carried out with average beam intensities of 7 pnA and 12 144CS5c pnA, respectively. The identification of the nuclide of interest was 144CS6c made in the BigRIPS separator by determining the atomic number and the 144CS7c mass-to-charge ratio of the ion using the tof-B|r-|DE method. The 144CS8c reaction products were transported through the ZeroDegree Spectrometer 144CS9c and implanted into the beta-counting system WAS3ABi that was surrounded 144CSac by the EURICA array comprising of 84 HPGe detectors. The typical 144CSbc implantation rate was ~~100 ions/s. Measured: implanted ion-|b{+-}-t, 144CScc implanted ion-|b{+-}-|g-t and implanted ions-|g-t correlations. 144CSdc Deduced: T{-1/2}. 144CS L 0.0 0.93 S 8 144CS2 L %B-=100 $ %B-N=? 144CS cL %B-$Only |b{+-} decay mode is expected. 144CS cL T$From a fit to the implanted ion-|b{+-}-t spectrum using the 144CS2cL least-squares and maximum-likelihood methods. The data analysis 144CS3cL included contributions from the parent, daughter and grand-daughter 144CS4cL decays, as well as a constant background. 144CS5cL T{-1/2}=0.932 s {I76} is reported in 2017Wu04. 144CS 144CS B-:%B-N:XUNDL-4 2020CZ01 202106 144CS c Compiled (unevaluated) dataset from 2020Cz01: 144CS2c Phys Rev C 101, 024312 (2020) 144CS c Compiled by B. Singh (McMaster), June 5, 2021. 144CS c 2020Cz01: {+144}Cs produced in SF decay of {+252}Cf at CARIBU facility 144CS2c at Argonne National Laboratory. Fission fragments were thermalized in a 144CS3c large-volume gas catcher, extracted, bunched and cooled using a 144CS4c radio-frequency quadrupole ion guide. A=144 fragment selection was made 144CS5c using a timed deflection pulse and a He buffer gas-filled Penning trap. 144CS6c {+144}Cs ions were trapped in a Beta-decay Paul Trap (BPT). Neutron 144CS7c from |b-delayed decays were detected by measuring the time-of-flight 144CS8c (tof) between |b{+-} particles and recoil ions of |b{+-}n daughter, 144CS9c where neutron emission led to high energy recoils, thus short TOFs. 144CSAc Measured E(|b{+-}), I(|b{+-}), tof of recoils, (recoils)|b{+-}-coin 144CSBc using a plastic scintillator |DE-E telescope for |b and a metal-anode 144CSCc chevron microchannel plate for recoils. Also measured E|g, I|g, |b|g 144CSDc coincidences using 80% and 140% relative-efficiency HPGe detectors. 144CSEc Deduced %|b{+-}n, En, In, |b-delayed neutron spectrum obtained 144CSFc indirectly through conservation of energy and momentum, by measuring 144CSGc the time of flight (tof) of the recoil ions, which was determined from 144CSHc the time difference between the |b particles hitting a |DE-E detector 144CSIc and the recoil ion hitting a MCP detector, recoil ions from |b{+-}n 144CSJc emission having shorter times-of flight as compared to those from |b 144CSKc decay without the emission of delayed neutrons. The neutron spectrum is 144CSLc compared with that measured directly from the detection of neutrons 144CSMc by 1985Gr15 (Nucl. Sci. Eng. 91, 305). 144CS c For decays of trapped {+144}Cs, the %|b{+-}n is given by the ratio of 144CS2c the total number of decays resulting in {+143}Ba recoil ions over the 144CS3c total number of |b decays. The latter quantity can be determined 144CS4c from three different measurements: 1. n{-|br}: |b(ion)-coin with longer 144CS5c TOFs typical of |b and |g events; 2. n{-|b}: |b from trapped {+144}Cs 144CS5c ions; 3. n{-|b|g}: |b|g-coin events from {+144}Cs decay, in this case 144CS6c 198.9|g from {+144}Cs |b{+-} and 387.9|g from {+144}Ba |b{+-} decays. 144CS7c The {+143}Ba recoil ions were observed in the time window from 144CS8c 0.44-1.38 |ms corresponding to 200- to 2000-keV neutrons. The 200-keV 144CS9c neutron detection threshold was chosen to ensure the {+143}Ba events 144CSAc were not contaminated by events corresponding to |b decay to the ground 144CSBc state or |g-ray emitting states. Any potential anisotropic neutron 144CSCc emission was anticipated to be smaller than the 10% experimental 144CSDc uncertainty. 144CS L 0 (1-) 0.989 S 5 144CS2 L %B-=100$%B-N=2.95 24 (2020Cz01) 144CS cL %B-N$recommended value by 2020Cz01 from the ratio of the total number 144CS2cL of decays resulting in {+143}Ba recoil ions over the total number of 144CS3cL |b decays |b{-nr}, the latter determined by |b-ion coin with longer 144CS4cL TOFs typical of |b and |g events. Other values from 2020Cz01: 144CS5cL 2.49 {I23} (for total number of |b decays from trapped {+144}Cs ions 144CS6cL n{-|b}; and 2.31 {I36} (for |b|g-coin events from trapped {+144}Cs 144CS7cL ions |n{-|b|g}). Compiler's note: weighted average of all the three 144CS8cL values is 2.64 {I23}. The recommended value of %|b{+-}n=2.95 {I24} 144CS9cL in 2020Cz01 can be compared with 2.98 {I11} in 2020Li32 144CSAcL (Nucl. Data Sheets 168, 1) evaluation, where value from 2020Cz01 was 144CSBcL considered. 144CS cL J$From {+144}Cs Adopted Levels in the ENSDF database (May 2010 update) 144CS cL T$from 2020Li32 evaluation