EVIDENCE FOR THE FORMATION OF LONG-LIVED Bi208 BY THE (n, 2n) REACTION ON BISMUTH

1958 ◽  
Vol 36 (1) ◽  
pp. 18-24 ◽  
Author(s):  
J. C. Roy ◽  
T. A. Eastwood ◽  
R. C. Hawkings
Keyword(s):  
Excited State ◽  
Electron Capture ◽  
Half Life ◽  
First Excited State

Long-lived Bi208 has been observed through its decay by electron capture to the first excited state of Pb208 at 2.61 Mev. It has been produced by the (n, 2n) reaction on Bi209 in the NRX reactor. The half-life of Bi208 has been estimated to be 3 × 104 years, with an uncertainty of a factor of about 2.

THE DECAY OF Au193 AND LEVEL SCHEME OF Pt193

1957 ◽  
Vol 35 (5) ◽  
pp. 672-692 ◽  
Author(s):  
G. T. Ewan
Keyword(s):  
Excited State ◽  
Electron Capture ◽  
Level Scheme ◽  
Half Life ◽  
Internal Conversion ◽  
Upper Limit ◽  
First Excited State ◽  
Γ Rays ◽  
Γ Ray ◽  
Conversion Spectrum

Au193 has been produced as the daughter of Hg193 formed by the reaction Au197(p, 5n)Hg193 in the McGill synchrocyclotron. The internal conversion spectrum and unconverted γ-ray spectrum have been examined using β-ray spectrometers, Nal spectrometers, and coincidence techniques. Au193 decays by electron capture to Pt193 with a half-life of 17.5 ± 0.2 hr. An upper limit of 0.08% per disintegration has been placed on the probability of emission of positrons in this decay. Twenty-eight γ-rays, all below 500 kev., have been observed associated with the decay of Au193. The first excited state of Pt193 has been shown to be at 12.7 kev. and the lifetime of this state measured as (2.2 ± 0.8) × 10−9sec. A level scheme is proposed for Pt193.

scholarly journals New limit for the half-life of double beta decay of 94Zr to the first excited state of 94Mo

2017 ◽  
Vol 53 (4) ◽  
Author(s):  
N. Dokania ◽  
V. Nanal ◽  
G. Gupta ◽  
S. Pal ◽  
R. G. Pillay ◽  
...  
Keyword(s):  
Excited State ◽  
Beta Decay ◽  
Half Life ◽  
Double Beta Decay ◽  
First Excited State

Half-life of the first excited state in 143Pm

1968 ◽  
Vol 26 (9) ◽  
pp. 571-572 ◽  
Author(s):  
K. Heyde ◽  
M. Dorikens ◽  
J. Demuynck ◽  
D. De Frenne ◽  
J. Uyttenhove ◽  
...  
Keyword(s):  
Excited State ◽  
Half Life ◽  
First Excited State

Coincidence measurements of the first excited state of 73Ge

1970 ◽  
Vol 48 (8) ◽  
pp. 930-934 ◽  
Author(s):  
D. G. Douglas
Keyword(s):  
Excited State ◽  
Half Life ◽  
Conversion Coefficient ◽  
Coincidence Measurement ◽  
First Excited State ◽  
Coincidence Measurements

A coincidence measurement of the K conversion coefficient of the 13.26 keV transition from the first excited state of 73Ge yields a result closer to the E2 theoretical value than that of an earlier less-precise measurement.The half-life of the level is found to be 2.95 ± 0.05 s in agreement with one of two disagreeing previous values.

Measurement of the half-life of the first excited state ofPb205

1994 ◽  
Vol 50 (3) ◽  
pp. 1319-1320 ◽  
Author(s):  
Z. Krečak ◽  
M. Krčmar ◽  
A. Ljubičić ◽  
B. A. Logan ◽  
D. B. Isabelle ◽  
...  
Keyword(s):  
Excited State ◽  
Half Life ◽  
First Excited State

scholarly journals Half-life of the first excited state ofHg201

2007 ◽  
Vol 75 (6) ◽  
Author(s):  
V. Méot ◽  
J. Aupiais ◽  
P. Morel ◽  
G. Gosselin ◽  
F. Gobet ◽  
...  
Keyword(s):  
Excited State ◽  
Half Life ◽  
First Excited State

The half-life of the first excited state of Tl203

1960 ◽  
Vol 21 ◽  
pp. 393-396 ◽  
Author(s):  
E.C.B. Pederson ◽  
R.E. Bell
Keyword(s):  
Excited State ◽  
Half Life ◽  
First Excited State

scholarly journals The half-life of the first excited state of 111Cd

Physica ◽  
1955 ◽  
Vol 21 (6-10) ◽  
pp. 899-900 ◽  
Author(s):  
L.H.Th. Rietjens ◽  
H.J. Van den Bold ◽  
A. Heyligers
Keyword(s):  
Excited State ◽  
Half Life ◽  
First Excited State

The half-life of the 57 keV first excited state in Pr143

1963 ◽  
Vol 6 (1) ◽  
pp. 89-90 ◽  
Author(s):  
E. Bożek ◽  
A.Z. Hrynkiewicz ◽  
S. Ogaza ◽  
M. Rybicka ◽  
J. Styczeń
Keyword(s):  
Excited State ◽  
Half Life ◽  
First Excited State

Messung der Lebensdauer des 87 keV-Niveaus von 160Dy

1962 ◽  
Vol 17 (8) ◽  
pp. 638-640 ◽  
Author(s):  
F. W. Richter ◽  
D. Wiegandt
Keyword(s):  
Excited State ◽  
Half Life ◽  
Coulomb Excitation ◽  
First Excited State ◽  
Good Agreement

Measuring the half-life of the first excited state of 160Dy we got T12= (2,24 ± 0,06) ns. instead of (1,8 ± 0,2) ns given by McGOWAN 1. This value is in good agreement with COULOMB-excitation data

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