Study of the β-delayed neutron decay of 17C and 18C

1995 ◽  
Vol 582 (1-2) ◽  
pp. 109-123 ◽  
Author(s):  
K.W. Scheller ◽  
J. Görres ◽  
S. Vouzoukas ◽  
M. Wiescher ◽  
B. Pfeiffer ◽  
...  
2007 ◽  
Vol 75 (5) ◽  
Author(s):  
J. L. Lou ◽  
Z. H. Li ◽  
Y. L. Ye ◽  
H. Hua ◽  
D. X. Jiang ◽  
...  

2018 ◽  
Vol 193 ◽  
pp. 04011
Author(s):  
P.E. Garrett ◽  
N. Bernier ◽  
R. Dunlop ◽  
A.D. MacLean ◽  
V. Bildstein ◽  
...  

The β-decay half lives of nuclei near the r-process path are critical information required for abundance calculations, especially those near neutron number N = 82. Specifically, the nuclei below doubly-magic 132Sn are key, and play an important role in the formation and shape of the second r-process abundance peak. The half lives in this region are challenging to measure due to the significant β-delayed neutron decay branches and the population of isomeric states with half lives comparable to the ground states. However, by measuring the time distribution of γ rays, these complications can be eliminated. This requires, however, a very effcient γ-ray spectrometer since the production of isotopes in this region is very limited. The new GRIFFIN array at TRIUMF-ISAC provides the high effciency required for these measurements. Recent improvements in the quality of the beams produced at TRIUMF, employing the IG-LIS device, are outlined, as well as the current status of the ARIEL facility. The GRIFFIN spectrometer and its use are briefly described. The experiment to measure the half lives of 128-130Cd is outlined and the results given, and some examples of the power of GRIFFIN to expand decay schemes, specifically for the decay of 128Cd to 128In, are given.


1995 ◽  
Vol 51 (5) ◽  
pp. 2372-2380 ◽  
Author(s):  
M. D. Belbot ◽  
J. J. Kolata ◽  
K. Lamkin ◽  
R. J. Tighe ◽  
M. Zahar ◽  
...  

1994 ◽  
Vol 49 (1) ◽  
pp. 46-50 ◽  
Author(s):  
K. W. Scheller ◽  
J. Görres ◽  
J. G. Ross ◽  
M. Wiescher ◽  
R. Harkewicz ◽  
...  

2010 ◽  
Author(s):  
Giuseppe Lorusso ◽  
J. G. Pereira ◽  
P. T. Hosmer ◽  
L. Kern ◽  
Karl Ludwig Kratz ◽  
...  

1997 ◽  
Vol 358 (2) ◽  
pp. 253-255 ◽  
Author(s):  
N. Aoi ◽  
K. Yoneda ◽  
H. Miyatake ◽  
H. Ogawa ◽  
Y. Yamamoto ◽  
...  

1981 ◽  
Vol 103 (4-5) ◽  
pp. 305-308 ◽  
Author(s):  
K.-L. Kratz ◽  
A. Schröder ◽  
H. Ohm ◽  
G. Jung ◽  
B. Pfeiffer ◽  
...  

1997 ◽  
Vol 125 (1) ◽  
pp. 51-60 ◽  
Author(s):  
Habeeb H. Saleh ◽  
Theodore A. Parish ◽  
S. Raman ◽  
Nobuo Shinohara

2020 ◽  
Vol 239 ◽  
pp. 04001
Author(s):  
Paraskevi Dimitriou ◽  
Iris Dillmann ◽  
Balraj Singh ◽  
Vladimir Piksaikin ◽  
Jose-Luis Tain ◽  
...  

A new database containing all available experimental and evaluated β-delayed neutron data is presented in this paper. The database is the product of an international effort coordinated by the International Atomic Energy Agency. It comprises a microscopic section including all available experimental data on beta-decay half-lives, β-delayed neutron emission probabilities and spectra, as well as new systematics and global theoretical calculations for comparison. The beta-delayed neutron data for individual precursors have been benchmarked against available data on macroscopic properties such as total delayed-neutron yields and spectra, delayed-neutron decay curves and time-dependent group parameters using the summation method. All available measured macroscopic data have also been compiled in the macroscopic section of the database. The dedicated database is available online on the IAEA server (URL:http://www-nds.iaea.org/beta-delayed-neutron/database.html).


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