Thick and Thin Target7Li(p,n)7Be Neutron Spectra Below the Three-Body Breakup Reaction Threshold

Pachuau, Rebecca; Lalremruata, B.; Otuka, Naohiko; Hlondo, L. R.; Punte, L. R. M.; Thanga, H. H.

doi:10.1080/00295639.2017.1291053

Cited by 18 publications

(8 citation statements)

References 1 publication

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Also, the proton beam is continuous and therefore time of flight technique could not be employed to evaluate the neutron flux energy spectrum [19]. To resolve these two concerns, we have used EPEN (Energy of Proton Energy of Neutron) [20], a simulation code, to obtain the neutron flux energy spectrum. The code is designed for incident proton energies from 1.88 to 7 MeV.…”

Section: Neutron Productionmentioning

confidence: 99%

Measurement of neutron induced reaction cross-section of ⁹⁹Mo

Upadhyay,

Choudhary,

Singh

et al. 2023

J. Phys. G: Nucl. Part. Phys.

View full text Add to dashboard Cite

In the present work, we have measured 98Mo(n,γ)99Mo reaction cross section using a 7Li(p,n)7Be neutron source at 1.67 ± 0.14, 2.06 ± 0.14 and 2.66 ± 0.16 MeV neutron energies. We have employed offline γ-ray spectroscopy to measure the induced activity of the sample. The 115In(n,n’γ)115mIn reaction was used as a monitor reaction. Different attributes propagating the uncertainty in the total result, measured cross-sections with their uncertainties and correlation coefficients are given in detail in the present study. The result is compared with the data libraries, EXFOR database and theoretical model outcome from different level density models.

show abstract

Section: Neutron Productionmentioning

confidence: 99%

Measurement of neutron induced reaction cross-section of ⁹⁹Mo

Upadhyay,

Choudhary,

Singh

et al. 2023

J. Phys. G: Nucl. Part. Phys.

View full text Add to dashboard Cite

show abstract

“…A simulation of the neutron spectrum and intensity at the sample is required for optimizing the experimental assembly. Several Monte-Carlo simulation codes for the 7 Li(p, n) neutron yields exist [12][13][14][15]. In this paper we use the SimLiT code [13].…”

Section: Optimizing Experimental Parametersmentioning

confidence: 99%

“…In this paper we use the SimLiT code [13]. The SimLiT code was compared to experimental data at E p = 1912 keV and E p = 2000 keV [13], and to other simulations at higher energies [15]. It was also successfully used for many experiments [16].…”

Section: Optimizing Experimental Parametersmentioning

confidence: 99%

Production of Quasi-Stellar Neutron Field at Explosive Stellar Temperatures

Friedman

2020

Preprint

View full text Add to dashboard Cite

Neutron-induced reactions on unstable isotopes play a key role in the nucleosynthesis i-, r-, p-, rp-and νp-processes occurring in astrophysical scenarios. While direct cross section measurements are possible for long-living unstable isotopes using the neutron Time-of-Flight method, the currently available neutron intensities (≈ 10 6 n/s) require large samples which are not feasible for shorter lifetime isotopes. For the last four decades, the 7 Li(p, n) reaction has been used to provide a neutron field at a stellar temperature of ≈ 0.3 GK with significantly higher intensity, allowing the successful measurement of many cross sections along the s-process path. In this paper we describe a novel method to use this reaction to produce neutron fields at temperatures of ≈ 1.5-3.5 GK, relevant to scenarios such as convective shell C/Ne burning, explosive Ne/C burning, and corecollapse supernovae. This method will allow direct cross section measurements of many important reactions at explosive temperatures, such as 26 Al(n, p), 75 Se(n, p) and 56 Ni(n, p).

show abstract

“…The effects of various level density models available in the code were also evaluated for a better description of the existing experimental data. The obtained results were compared with the Evaluated Nuclear Data Library (ENDF/B-VIII.0) [9], Joint Evaluated Fission and Fusion File (JEFF-3.3) [10], Japanese Evaluated Nuclear Data Library (JENDL-4.0) [11], and Chinese Evaluated Nuclear Data Library (CENDL-3.2) [12].…”

Section: Introductionmentioning

confidence: 99%

Investigation of ⁵⁸Ni (n, p)⁵⁸Co reaction cross-section with covariance analysis*

Hingu,

Mukherjee,

Parashari

et al. 2024

Chinese Phys. C

View full text Add to dashboard Cite

The excitation function of the $\rm {}^{58}Ni ( n, p ){}^{58}Co$ reaction is measured by using the well-established neutron activation technique and $\gamma$-ray spectroscopy. Neutrons in the energy range of 1.7 to 2.7 $\rm MeV$ were generated using the $\rm ^{7}Li(p, n)$ reaction. The neutron flux was measured by using the standard $\rm {}^{115}In ( n, n^{'} ){}^{115m}In$ monitor reaction. The results of neutron spectrum averaged cross-section of $\rm {}^{58}Ni ( n, p ){}^{58}Co$ reactions are compared with existing cross-section data available in the EXFOR data library as well as with various evaluated data libraries like ENDF/B-VIII.0, JEFF-3.3, JENDL-4.0 and CENDL-3.2. Theoretical calculations were performed using the nuclear reaction code TALYS. Various nuclear level density (NLD) models were tested and compared with the present findings. Realistic NLDs are also obtained through the spectral distribution method (SDM). The cross-section results are reported along with the absolute errors by investigating uncertainty propagation, using the covariance technique. The corrections for $\gamma$-ray true coincidence summing, low-energy background neutrons and $\gamma$-ray self attenuation are performed. The experimental cross-section obtained in the present study is consistent with previously published experimental data, evaluated libraries and theoretical calculations carried out using the TALYS code.

show abstract

Thick and Thin Target⁷Li(p,n)⁷Be Neutron Spectra Below the Three-Body Breakup Reaction Threshold

Cited by 18 publications

References 1 publication

Measurement of neutron induced reaction cross-section of ⁹⁹Mo

Measurement of neutron induced reaction cross-section of ⁹⁹Mo

Production of Quasi-Stellar Neutron Field at Explosive Stellar Temperatures

Investigation of ⁵⁸Ni (n, p)⁵⁸Co reaction cross-section with covariance analysis*

Contact Info

Product

Resources

About

Thick and Thin Target7Li(p,n)7Be Neutron Spectra Below the Three-Body Breakup Reaction Threshold

Cited by 18 publications

References 1 publication

Measurement of neutron induced reaction cross-section of 99Mo

Measurement of neutron induced reaction cross-section of 99Mo

Production of Quasi-Stellar Neutron Field at Explosive Stellar Temperatures

Investigation of 58Ni (n, p)58Co reaction cross-section with covariance analysis*

Contact Info

Product

Resources

About

Thick and Thin Target⁷Li(p,n)⁷Be Neutron Spectra Below the Three-Body Breakup Reaction Threshold

Measurement of neutron induced reaction cross-section of ⁹⁹Mo

Measurement of neutron induced reaction cross-section of ⁹⁹Mo

Investigation of ⁵⁸Ni (n, p)⁵⁸Co reaction cross-section with covariance analysis*