Keywords: Neutron radiative capture process, primordial nucleosynthesis, nuclear astrophysics, cross sections, cluster model. 1. Introduction Although, the radiative neutron capture reactions on 14C and 14N at astrophysical energies do not take part in the main thermonuclear cycles [1–3] directly, they can

significant change of the capture cross section of 207Pb from 0.712 ± 0.012 b to 0.620 ± 0.014 b is particularly important, because this cross section is utilized as a standard in thermal neutron capture cross section measurements by the method of prompt gamma rays produced by the capture of thermal neutrons.

The neutron absorption on 135 Xe has a cross section reaching atomic values, but for other neighboring isotopes the cross sections are inexplicably much smaller. A list of empirical neutron capture cross sections on several nuclei is shown in Table 1, with data extracted from Refs. [ 40, 41, 42 ].

Among the significant findings are the following. The neutron width of the largest resonance in Gd, at 0.032 eV in 157Gd, has been measured to be (9 6 1)% smaller than that given in ENDF/B-VI updated through release 8. The thermal (2200 m/s) capture cross section of157Gd has been measured to be 11%

Download Table | Derived neutron capture cross sections of 209 Bi from publication: Measurement of keV-Neutron Capture Cross Sections and Capture Gamma-Ray Spectra of 209Bi | The capture cross

Table 1 . In the past, many experimental groups have measured the neutron capture cross sections of 153Eu using the time-of-flight (TOF) method.

Neutron capture and fission reaction cross sections are usually measured cross section following in Table 2 should be reduced by 0.05 barn to obtain the.

Table of Contents 1 Introduction 2 Nuclear Data Evaluation 3 Results 4 Summary. Introduction Overview Capture cross section FIESTA , Eldorado Hotel, Santa Fe, NM H. I. Kim 23. Results Cross Section Neutron Cross Section Evaluation of U-238 Author:

If neutron absorption leads to radioactivity, column four lists its half-life. Usually, this activity is caused by radiative capture of neutrons; in those few 

7 rows · Neutron Cross Section: Brinell Hardness: Neutron Mass Absorption: Bulk Modulus: NFPA Label: CAS

5 Neutron reaction cross sections •Total microscopic neutron cross section is expressed as: σ= dN/dt / [(I/A) n A ∆x] • Defining neutron flux as: φ= I/A (neutrons/sec.cm2) • Then: dN/dt = φ(A ∆x n σ) • Neutron flux can also be defined: φ= nnvn where: nn is neutron density per cm3 in beam, vn relative velocity (cm/sec.) of neutrons in beam