Neutron-activation determination of elements with overlapping resonances in neutron-absorption cross sections

1989 ◽  
Vol 66 (6) ◽  
pp. 476-478 ◽  
Author(s):  
V. V. Ivanenko ◽  
V. N. Kustov ◽  
V. A. Anufriev
Keyword(s):  
Neutron Activation ◽  
Cross Sections ◽  
Neutron Absorption ◽  
Absorption Cross ◽  
Activation Determination

Measurement of Neutron Absorption Cross Sections with a Pile Oscillator

1948 ◽  
Vol 74 (8) ◽  
pp. 864-870 ◽  
Author(s):  
J. I. Hoover ◽  
W. H. Jordan ◽  
C. D. Moak ◽  
L. Pardue ◽  
H. Pomerance ◽  
...  
Keyword(s):  
Cross Sections ◽  
Neutron Absorption ◽  
Absorption Cross

Neutron Absorption Cross Sections ofPa231andPa232

1956 ◽  
Vol 101 (3) ◽  
pp. 1053-1056 ◽  
Author(s):  
R. R. Smith ◽  
N. P. Alley ◽  
R. H. Lewis ◽  
A. VanderDoes
Keyword(s):  
Cross Sections ◽  
Neutron Absorption ◽  
Absorption Cross

scholarly journals Determination of the absorption cross-sections of higher order iodine oxides at 355 nm and 532 nm

2020 ◽  
Author(s):  
Thomas R. Lewis ◽  
Juan Carlos Gómez Martin ◽  
Mark A. Blitz ◽  
Carlos A. Cuevas ◽  
John M. C. Plane ◽  
...  
Keyword(s):  
Cross Section ◽  
Cross Sections ◽  
Atmospheric Chemistry ◽  
Absorption Cross Section ◽  
Absorption Cross ◽  
Time Resolved ◽  
Flight Mass Spectrometry ◽  
Iodine Oxides ◽  
Photo Ionization

Abstract. Iodine oxides (IxOy) play an important role in the atmospheric chemistry of iodine. They are initiators of new particle formation events in the coastal and polar boundary layer and act as iodine reservoirs in tropospheric ozone-depleting chemical cycles. Despite the importance of the aforementioned processes, the photochemistry of these molecules has not been studied in detail previously. Here, we report the first determination of the absorption cross sections of IxOy, x = 2, 3, 5, y = 1–12 at λ = 355 nm by combining pulsed laser photolysis of I2/O3 gas mixtures in air with time-resolved photo-ionization time-of-flight mass spectrometry, using NO2 actinometry for signal calibration. The oxides selected for absorption cross section determinations are those presenting the strongest signals in the mass spectra, where signals containing 4 iodine atoms are absent. The method is validated by measuring the absorption cross section of IO at 355 nm, σ355 nm, IO = (1.2 ± 0.1) ×  10–18 cm2, which is found to be in good agreement with the most recent literature. The results obtained are: σ355 nm, I2O3 

scholarly journals Method for Measuring Neutron-Absorption Cross Sections by the Effect on the Reactivity of a Chain-Reacting Pile

1947 ◽  
Vol 72 (1) ◽  
pp. 16-23 ◽  
Author(s):  
H. L. Anderson ◽  
E. Fermi ◽  
A. Wattenberg ◽  
G. L. Weil ◽  
W. H. Zinn
Keyword(s):  
Cross Sections ◽  
Neutron Absorption ◽  
Absorption Cross ◽  
A Chain

Studying the Possibility of Neutron Activation Determination of the Content of Rhenium in Radioactive Rocks

2021 ◽  
Vol 85 (10) ◽  
pp. 1059-1064
Author(s):  
A. A. Afonin ◽  
Yu. M. Burmistrov ◽  
I. V. Vikentyev ◽  
S. V. Zuyev ◽  
P. E. Kailachakov ◽  
...  
Keyword(s):  
Neutron Activation ◽  
Activation Determination
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