ADOPTED LEVELS for 199Rn

Author: Balraj Singh |  Citation: Nucl. Data Sheets 108, 79 (2007) |  Cutoff date: 15-Oct-2006 

 Full ENSDF file | Adopted Levels (PDF version) 


Q(β-)=-8.26×103 keV 8S(n)= 8.34×103 keV 7S(p)= 2.07×103 keV SYQ(α)= 7.14×103 keV 5
Reference: 2012WA38

References:
  A  203Ra α decay (31 MS)  B  203Ra α decay (24 MS)

General Comments:

199Rn isotope identified (1980Di07,1981En02) in 169Tm(35Cl,5n) reaction at E(35Cl)=15-185 MeV. Others: 1982Hi14, 1984Ca32, 1986Bo35.

In 193Ir(19F,13N) reaction at E=9.4 MeV/nucleon (1969Ru08), analysis of fissioning products possibly suggests fission isomer of 199Rn with T1/2|<2 ns (1969Ru08). This isomer remains unconfirmed

The low-spin and high-spin 199Rn α activities are the parents (respectively) of the low-spin (6609α) and high-spin (6699α) 195Po α activities (1982Hi14).

Mass mapping from analysis of α decay data: 2002No01

Q-value: Note: Current evaluation has used the following Q record

Q-value: Q(εp)=6670 70 (2003Au03)






E(level)
(keV)
XREFJπ(level) T1/2(level)
    0A  (3/2-) 0.59 s 3 
% ε = 6
% α = 94
  180 70  B (13/2+) 0.31 s 2 
% ε = 3
% α = 97

Jπ(level): From analogy with other n=113 nuclei, shell model.

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Additional Level Data and Comments:

E(level)Jπ(level)T1/2(level)Comments
    0(3/2-) 0.59 s 3 
% ε = 6
% α = 94
Branching from ε syst of 1973Ta30.
E(level): Branching from ε syst of 1973Ta30.
  180(13/2+) 0.31 s 2 
% ε = 3
% α = 97
Branching from ε syst of 1973Ta30.

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