ADOPTED LEVELS for 278Mt
Author: Balraj Singh | Citation: Nucl. Data Sheets 156, 70 (2019) | Cutoff date: 31-Jan-2019
Full ENSDF file | Adopted Levels (PDF version)
| Q(β-)=-650 keV SY | S(n)= 5300 keV SY | S(p)= 3050 keV SY | Q(α)= 9630 keV 50 | ||
| Reference: 2017WA10 |
| References: | |||
| A | 282Rg α decay (100 S) | ||
| E(level) (keV) | XREF | T1/2(level) |
| 0 | A | 4.5 s +35-13 % SF = ? % α ≈ 100 |
Additional Level Data and Comments:
| E(level) | Jπ(level) | T1/2(level) | Comments |
| 0 | 4.5 s +35-13 % SF = ? % α ≈ 100 | Only the α decay mode observed with no SF events detected. E(level): Only the α decay mode observed with no SF events detected. |
2010Og01, 2011Og04: 278Mt from α decay chain: 294Ts |) 290Mc |) 286Nh |) 282Rg |) 278Mt. 294Ts formed and identified in reaction 249Bk(48Ca,3n), E=247 MeV at FLNR-JINR-Dubna using Dubna gas-filled recoil separator (DGFRS). Measured Eα, half-lives, α-α correlations. One decay chain was assigned to the decay of 294Ts. See details in 294Ts Adopted Levels.
2012Og06, 2013Og04, 2013Og01: 278Mt formed in the decay chain of 294Ts as above in 2011Og04. See details in 294Ts Adopted Levels. Three decay chains were reported.
2014Kh04: 278Mt from α decay chain: 294Ts |) 290Mc |) 286Nh |) 282Rg |) 278Mt; 294Ts formed and identified in reaction 249Bk(48Ca,3n),E=252.1, 254.0, 258.0 MeV at GSI using Gas-filled Trans-Actinide Separator and Chemistry Apparatus (TASCA). Four decay chains were assigned to the decay of 294Ts, but only two reported in the paper. See details for 294Ts Adopted Levels
One EVR-α-SF correlated decay chain reported by 2011Og04, three by 2013Og04 and 2012Og06, and two by 2014Kh04, all starting with the decay of 294Ts and ending in SF-decaying 270Db nuclide in Dubna work (2013Og04, 2011Og04) and in SF-decaying 266Lr in GSI work (2014Kh04). 2011Og07 and 2012OgZZ are also related reports for the Dubna work. See Adopted Levels for 294Ts for details of above three studies.
For theoretical studies, consult Nuclear Science References (NSR) database at NNDC, BNL for 47 primary references dealing with the half-lives and other aspects of nuclear structure in this mass region
Q-value: Estimated uncertainties (2017Wa10): ΔQ(β-)=880, ΔS(n)=940, ΔS(p)=820.
Q-value: S(2n)=11720 820 (syst, 2017Wa10). S(2p)=8010 (theory, 1997Mo25)
Q-value: Others: 9580 keV 30 (2017Og01 review) from Eα=9.38-9.55 MeV