ADOPTED LEVELS for 229Rn
Author: Balraj Singh | Citation: ENSDF | Cutoff date: 14-MAY-2009
Full ENSDF file | Adopted Levels (PDF version)
| Q(β-)=3688 keV 20 | S(n)= 3952 keV 22 | S(p)= 9.6×103 keV SY | Q(α)= 2.4×103 keV SY | ||
| Reference: 2012WA38 |
| E(level) (keV) | T1/2(level) |
| 0 | 12.0 s +12-13 % β- = 100 |
Additional Level Data and Comments:
| E(level) | Jπ(level) | T1/2(level) | Comments |
| 0 | 12.0 s +12-13 % β- = 100 | Measured yield of 229Rn=0.3 ions/μC 2 at ISOLTRAP and 200 ions/μC 20 at ISOLDE (read by the evaluator from figure 3 of 2009Ne03). E(level): Measured yield of 229Rn=0.3 ions/μC 2 at ISOLTRAP and 200 ions/μC 20 at ISOLDE (read by the evaluator from figure 3 of 2009Ne03). |
2009Ne03: 229Rn was identified in spallation reaction U(p,X) using UCx target and 1.4 GeV pulsed proton beam from CERN’s proton Synchrotron Booster accelerator. The measurements were performed at the double Penning-trap mass spectrometer ISOLTRAP at ISOLDE-CERN facility. The reaction products from the above mentioned spallation reaction diffused from the target into a high-efficiency arc discharge ion source. The singly charged ions were accelerated to 30 keV and separated by a high-resolution mass separator. The resulting ion beam was injected into a radio frequency quadrupole cooler ISCOOL. Finally the ions were stopped and bunched in the ISOLTRAP cooler to prepare these for capture into two Penning traps for mass measurements. Off-line studies were done at the ISOLDE facility to measure β decay and half-lives.
Measured mass excess=39362 keV 13 (2009Ne03)
Q-value: Note: Current evaluation has used the following Q record 3546 39 3958 26 9390 calc 2380 calc 2009AuZZ,1997Mo25
Q-value: S(2n)=9655 22 (2009AuZZ), S(2p)=17540 (calculated,1997Mo25)
Q-value: No Q values listed in 2003Au03
Q-value: Q(β-) and S(n) from 2009AuZZ. S(p) and Q(α) from 1997Mo25