ADOPTED LEVELS, GAMMAS for 160Nd
Author: N. Nica | Citation: Nucl. Data Sheets 176, 1 (2021) | Cutoff date: 1-May-2021
Full ENSDF file | Adopted Levels (PDF version)
| Q(β-)=6170 keV 50 | S(n)= 5070 keV 60 | S(p)= 13240 keV SY | Q(α)= -4330 keV SY | ||
| Reference: 2021WA16 |
| References: | |||
| A | 160Nd IT decay | ||
| E(level) (keV) | XREF | Jπ(level) | T1/2(level) | E(γ) (keV) | I(γ) | M(γ) | Final Levels | |
| 0.0 | A | 0+ | 439 ms 37 % β- = 100 % β-n = ? | |||||
| 65.2 5 | A | (2+) | 65.2 5 | 100 | [E2] | 0.0 | 0+ | |
| 215.1 7 | A | (4+) | 149.9 5 | 100 | [E2] | 65.2 | (2+) | |
| 1107.9 9 | A | (4-) | 1.63 µs 21 | 892.8 5 | 100 | [E1] | 215.1 | (4+) |
E(level): From Eγ values.
Jπ(level): Postulated by 2016Id02 based on analogy with 156Nd (2009Si21) and the expected rotational character of these nuclei
| E(level) (keV) | Jπ(level) | T1/2(level) | E(γ) | I(γ) | M(γ) | Final Levels | |
| Band 1 - Kπ=0+ ground-state band | |||||||
| 0.0 | 0+ | 439 ms 37 % β- = 100 % β-n = ? | |||||
| 65.2 5 | (2+) | 65.2 5 | 100 | [E2] | 0.0 | 0+ | |
| 215.1 7 | (4+) | 149.9 5 | 100 | [E2] | 65.2 | (2+) | |
| E(level) (keV) | Jπ(level) | T1/2(level) | E(γ) | I(γ) | M(γ) | Final Levels | |
| Band 2 - Kπ=(4-) ν1/2[521] # ν7/2[633] bandhead | |||||||
| 1107.9 9 | (4-) | 1.63 µs 21 | |||||
| E(level) (keV) | Jπ(level) | T1/2(level) | E(γ) (keV) | Multipolarity | Conversion Coefficient | Additional Data |
| 65.2 | (2+) | 65.2 5 | [E2] | 10.7 | α=10.7 4, α(K)=3.53 8, α(L)=5.55 22, α(M)=1.27 5, α(N)=0.274 11, α(O)=0.0346 14, α(P)=0.000152 4 | |
| 215.1 | (4+) | 149.9 5 | [E2] | 0.524 | α=0.524 10, α(K)=0.358 7, α(L)=0.130 3, α(M)=0.0293 6, α(N)=0.00637 13, α(O)=0.000846 17, α(P)=1.71×10-5 3 | |
| 1107.9 | (4-) | 1.63 µs 21 | 892.8 5 | [E1] | 1.16×10-3 | B(E1)(W.u.)=2.0E-10 3, α=1.16E-3, α(K)=0.001000 14, α(L)=0.0001271 18, α(M)=2.67E-5 4, α(N)=5.96E-6 9, α(O)=9.05E-7 13, α(P)=5.91E-8 9 |
Additional Level Data and Comments:
| E(level) | Jπ(level) | T1/2(level) | Comments |
| 0.0 | 0+ | 439 ms 37 % β- = 100 % β-n = ? | Mainly β- decay mode is expected. E(level): Mainly β- decay mode is expected. Kπ=0+ ground-state band. |
| 65.2 | (2+) | E(level): Kπ=0+ ground-state band. | |
| 215.1 | (4+) | E(level): Kπ=0+ ground-state band. | |
| 1107.9 | (4-) | 1.63 µs 21 | E(level): Kπ=(4-) ν1/2[521] # ν7/2[633] bandhead. |
| E(level) | E(gamma) | Comments |
2012Ku26: 160Nd produced and identified in 9Be(238U,F), E=1 GeV/nucleon reaction using SIS-18 synchrotron facility at GSI. Target=1.6 g/cm2 9Be placed at the entrance of projectile Fragment Separator (FRS). Particle identification was achieved by event-by-event in-flight analysis of time-of-flight, energy loss measurement, and magnetic rigidity (tof-ΔE’-Bρ). Time-of-flight measured using two plastic scintillation detectors, energy loss or deposit by ionization chambers (MUSIC), and magnetic rigidity by four time-projection chambers (TPC), which also provided energy deposit information. Isomer tagging method for known μs isomers was used to verify event-by-event identification and in-flight separation of new isotopes. Gamma rays from the known isomers were recorded in coincidence with the incoming ions using either the RISING array of Ge detectors at GSI or only two Ge detectors, a stopper foil and a scintillator for veto signal. Measured production cross section. Comparison of measured σ with predictions from ABRABLA model and EPAX-3 model
2012Au07 (NUBASE-12) quote first observation of 160Nd in 1985Si25 (and priv. comm. from the first author of 1985Si25 to γ. Audi in January 1988) from thermal fission of 252Cf. The perusal of 1985Si25 does not show any indication of identification of 160Nd isotope, and private communication is only an oral one, thus there does not seem much evidence of identification of 160Nd in 1985 paper.
2017Wu04, 2016Id02, 2015TaZX: 9Be(238U,F), E=345 MeV/nucleon, see 160Nd IT Decay dataset
Nuclear structure calculations (levels, J, π, moments): 2012Gh07, 1997Lo07, 1987Ne03, 1985Ro21, 1984Sa16
Unless mentioned otherwise, all data are from 2016Id02 (160Nd IT Decay dataset)
Q-value: ΔS(p)=400, ΔQ(α)=300 (syst,2021Wa16)
Q-value: S(2n)=9030 50, S(2p)=24760 400 (syst), Q(β-n)=1760 50 (2021Wa16)