scholarly journals The “Beta-Delayed Neutrons at RIKEN” Project (BRIKEN): Conquering the Most Exotic Beta-Delayed Neutron-Emitters

2018 ◽  
Vol 28 (1) ◽  
pp. 28-31 ◽  
Author(s):  
Iris Dillmann ◽  
Ariel Tarifeño-Saldivia
Keyword(s):  
Delayed Neutron ◽  
Delayed Neutrons ◽  
Beta Delayed

scholarly journals A new reference database for beta-delayed neutrons

2020 ◽  
Vol 239 ◽  
pp. 04001
Author(s):  
Paraskevi Dimitriou ◽  
Iris Dillmann ◽  
Balraj Singh ◽  
Vladimir Piksaikin ◽  
Jose-Luis Tain ◽  
...  
Keyword(s):  
Neutron Emission ◽  
Theoretical Calculations ◽  
Summation Method ◽  
Neutron Decay ◽  
Reference Database ◽  
Delayed Neutron ◽  
Neutron Data ◽  
Energy Agency ◽  
Delayed Neutrons ◽  
Beta Delayed

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).

Beta-delayed neutron emission following the decay of 17N

1976 ◽  
Vol 274 (1-2) ◽  
pp. 45-52 ◽  
Author(s):  
H. Ohm ◽  
W. Rudolph ◽  
K.-L. Kratz
Keyword(s):  
Neutron Emission ◽  
Delayed Neutron ◽  
Beta Delayed

scholarly journals Measurement of the delayed-neutron multiplicity and time constants in the thermal neutron induced fission of 235U at ILL

2020 ◽  
Vol 239 ◽  
pp. 18006
Author(s):  
Daniela Foligno ◽  
Pierre Leconte ◽  
Olivier Serot ◽  
Benoit Geslot ◽  
Grégoire De Izarra ◽  
...  
Keyword(s):  
Data Analysis ◽  
Cold Neutron ◽  
Average Lifetime ◽  
Reactor Safety ◽  
Delayed Neutron ◽  
Delayed Neutrons ◽  
Time Constants ◽  
Experimental Campaign ◽  
Safety Margins ◽  
Induced Fission

Delayed-neutron (DN) data is essential in inherent reactor safety and reactor control since it is needed for the estimation of the reactivity. Nowadays, discrepancies among the data in various international databases (JEFF, ENDF, JENDL) are large and bring excessive conservatism in the safety margins. The ALDEN (Average Lifetime of DElayed Neutrons) experiment, built in a collaboration between CEA and CNRS, aimed at re-measuring the DN data associated with several fissioning systems (average delayed-neutron yield and kinetic parameters). The first experimental campaign consisted in the integral measurement of the DN activity after the irradiation of an 235U target. It took place under the cold neutron flux of ILL (Institut Laue-Langevin) at the beginning of September 2018, in the PF1b experimental zone (doi:10.1016/j.nima.2006.03.020). The data analysis gave an average DN yield of 1.631E-02(2) DN/fiss and a mean precursors’ half-life of 8.93(9) s. The results are consistent with the literature, but they are affected by one third of the uncertainty.

Beta-delayed neutron radioactivity of15B

1984 ◽  
Vol 319 (2) ◽  
pp. 237-238 ◽  
Author(s):  
J. P. Dufour ◽  
S. Beraud-Sudreau ◽  
R. Moral ◽  
H. Emmermann ◽  
A. Fleury ◽  
...  
Keyword(s):  
Delayed Neutron ◽  
Beta Delayed

Impact of Tensor Interaction on Beta-Delayed Neutron Emission from Neutron-Rich Nickel Isotopes

2018 ◽  
Vol 81 (1) ◽  
pp. 24-31 ◽  
Author(s):  
E. O. Sushenok ◽  
A. P. Severyukhin ◽  
N. N. Arsenyev ◽  
I. N. Borzov
Keyword(s):  
Neutron Emission ◽  
Tensor Interaction ◽  
Delayed Neutron ◽  
Nickel Isotopes ◽  
Beta Delayed

Beta-delayed neutron spectroscopy by the TOF technique at IGISOL: 95Rb as a test case

2003 ◽  
pp. 347-347
Author(s):  
Z. Radivojevic ◽  
P. Dendooven ◽  
V. Lyapin ◽  
S. Nummela ◽  
A. Jokinen ◽  
...  
Keyword(s):  
Test Case ◽  
Neutron Spectroscopy ◽  
Delayed Neutron ◽  
Beta Delayed

scholarly journals Beta delayed neutron measurements by means of Modular Total Absorption Spectrometer

2019 ◽  
Vol 201 ◽  
pp. 03002
Author(s):  
Michał Stepaniuk ◽  
Marek Karny ◽  
Aleksandra Fijałkowska ◽  
Wojciech Bielewski ◽  
Keyword(s):  
Decay Scheme ◽  
Branching Ratio ◽  
Published Data ◽  
Test Case ◽  
Total Absorption ◽  
Delayed Neutron ◽  
Total Absorption Spectrometer ◽  
Beta Delayed ◽  
Neutron Rich Isotopes ◽  
Absorption Spectrometer

Possibility to use Modular Total Absorption Spectrometer (MTAS) as a device to measure complete decay scheme, including β-n of neutron rich isotopes, has been investigated. Analysis of well known 87Br with its 2.6% β-n branching ratio served as a test case. Preliminary results agree with the published data.

BETA-DELAYED NEUTRON SPECTROSCOPY FOR r-PROCESS NUCLEOSYNTHESIS

2013 ◽  
Author(s):  
R. GRZYWACZ ◽  
S. V. PAULAUSKAS ◽  
M. MADURGA ◽  
W. A. PETERS ◽  
C. J. GROSS ◽  
...  
Keyword(s):  
Neutron Spectroscopy ◽  
Delayed Neutron ◽  
Beta Delayed ◽  
R Process

scholarly journals Evidence for Gamow-Teller Decay ofNi78Core from Beta-Delayed Neutron Emission Studies

2016 ◽  
Vol 117 (9) ◽  
Author(s):  
M. Madurga ◽  
S. V. Paulauskas ◽  
R. Grzywacz ◽  
D. Miller ◽  
D. W. Bardayan ◽  
...  
Keyword(s):  
Neutron Emission ◽  
Delayed Neutron ◽  
Beta Delayed ◽  
Emission Studies ◽  
Gamow Teller
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