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Aerospace Nuclear Science & Technology
Organized to promote the advancement of knowledge in the use of nuclear science and technologies in the aerospace application. Specialized nuclear-based technologies and applications are needed to advance the state-of-the-art in aerospace design, engineering and operations to explore planetary bodies in our solar system and beyond, plus enhance the safety of air travel, especially high speed air travel. Areas of interest will include but are not limited to the creation of nuclear-based power and propulsion systems, multifunctional materials to protect humans and electronic components from atmospheric, space, and nuclear power system radiation, human factor strategies for the safety and reliable operation of nuclear power and propulsion plants by non-specialized personnel and more.
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ANS Student Conference 2025
April 3–5, 2025
Albuquerque, NM|The University of New Mexico
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Latest News
First astatine-labeled compound shipped in the U.S.
The Department of Energy’s National Isotope Development Center (NIDC) on March 31 announced the successful long-distance shipment in the United States of a biologically active compound labeled with the medical radioisotope astatine-211 (At-211). Because previous shipments have included only the “bare” isotope, the NIDC has described the development as “unleashing medical innovation.”
A. N. Verma, Balesh Verma, Feroz Ahmed, L. S. Kothari
Nuclear Science and Engineering | Volume 72 | Number 2 | November 1979 | Pages 160-174
Technical Paper | doi.org/10.13182/NSE79-A19461
Articles are hosted by Taylor and Francis Online.
To study the anisotropy in scattering of thermal neutrons in beryllium, we have calculated elastic as well as inelastic differential cross sections. Anisotropy in elastic scattering is studied by replacing the δ function by a Gaussian function of suitable width. To study the anisotropy in inelastic scattering, we have calculated one-phonon coherent inelastic differential cross sections. The differential cross sections for the one- and two-phonon processes have also been calculated in the incoherent approximation. We have also expanded the angle dependence of cross section in terms of the Legendre polynomials. Using the above differential cross sections, the intensity of scattered neutrons in various angular directions has been calculated, and the results have been compared with the corresponding observed results of Aizawa et al. Calculated results are found in good agreement with the corresponding observed results. We have investigated the effect of anisotropy in scattering on steady-state angular spectra inside small beryllium assemblies. The calculated results have been compared with the observed results of Lake and Kallfelz and also with those obtained in the isotropic scattering approximation of Garg et al. It is found that the calculated spectra in the first angular direction (θ1 ≃ 28 deg) at various distances from the source plane are in better agreement with the corresponding observed results in the entire energy range than those obtained in the isotropic scattering approximation.
