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 20S(n)= 3952 keV 22S(p)= 9.6×103 keV SYQ(α)= 2.4×103 keV SY
Reference: 2012WA38

General Comments:

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

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




E(level)
(keV)
T1/2(level)
  0 12.0 s +12-13 
% β- = 100

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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).

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