First measurement of the $^{10}{\rm B}(α,n)^{13}{\rm N}$ reaction in an inertial confinement fusion implosion at the National Ignition Facility: Initial steps toward the development of a radiochemistry mix diagnostic [PDF]
, 2021 We report the first measurement of the $^{10}{\rm B}(\alpha,n)^{13}{\rm N}$ reaction in a polar-direct-drive exploding pusher (PDXP) at the National Ignition Facility (NIF). This work is motivated by the need to develop alternative mix diagnostics, radiochemistry being the focus here.
arxiv +1 more source
Weapons Radiochemistry: Trinity and Beyond [PDF]
arXiv, 2021 On July 16, 1945, the Trinity nuclear test exploded in the desert near Alamogordo, NM. A variety of new diagnostic experiments were fielded in an effort to understand the detailed performance of the nuclear device. This article describes a series of radiochemical experiments that were designed to measure the efficiency and neutron fluence of the test ...
arxiv
Potential Applications of Artificial Intelligence and Machine Learning in Radiochemistry and Radiochemical Engineering [PDF]
arXiv, 2021 Artificial intelligence and machine learning are poised to disrupt PET imaging from bench to clinic. In this perspective we offer insights into how the technology could be applied to improve the design and synthesis of new radiopharmaceuticals for PET imaging, including identification of an optimal labeling approach as well as strategies for ...
arxiv
Introduction to Astronomy with Radioactivity [PDF]
Springer Astrophysics and Space Science Library, Vol. 453, as
Edition #2 (2018), 2010 In the late nineteenth century, Antoine Henri Becquerel discovered radioactivity and thus the physics of weak interactions, well before atomic and quantum physics was known. The different types of radioactive decay, alpha, beta, and gamma decay, all are different types of interactions causing the same, spontaneous, and time-independent decay of an ...
arxiv +1 more source
Modeling interspur interactions as a potential mechanism of the FLASH effect [PDF]
arXiv, 2022 The mechanism responsible for the FLASH effect, normal tissue sparing by ultra-high dose rate (UHDR) irradiation with isoeffective tumor control compared to conventional dose rate (CDR) irradiation, remains undetermined. Here we investigate the contribution of interspur interactions (interactions between radiolytic species of individual particle tracks)
arxiv
Bayes' theorem and early solar short-lived radionuclides: the case for an unexceptional origin for the solar system [PDF]
, 2016 The presence of excesses of short-lived radionuclides in the early solar system evidenced in meteorites has been taken as testament to close encounters with exotic nucleosynthetic sources, including supernovae or AGB stars. An analysis of the likelihoods associated with different sources of these extinct nuclides in the early solar system indicates ...
arxiv +1 more source
Properties of negatively charged lithium ions and evaluation of the half-life of ${}^{7}$Be atom(s) [PDF]
arXiv, 2014 Bound state properties of the four-electron lithium ion Li$^{-}$ in its ground $2^{2}S-$state and isotope-subsistuted ${}^{6}$Li$^{-}$ and ${}^{7}$Li$^{-}$ ions in their ground $2^1S-$state(s) are determined from the results of accurate, variational computations.
arxiv
Accurate computations of bound state properties in three- and four-electron atomic systems in the basis of multi-dimensional gaussoids [PDF]
arXiv, 2016 Results of accurate computations of bound states in three- and four-electron atomic systems are discussed. Bound state properties of the four-electron lithium ion Li$^{-}$ in its ground $2^{2}S-$state are determined from the results of accurate, variational computations. We also consider a closely related problem of accurate numerical evaluation of the
arxiv
Experimental study of concrete activation compared to MCNP simulations for safety of neutron sources [PDF]
arXiv, 2019 The neutron activation of shielding materials and the generated decay gamma radiation are well-known issues in terms of occupational exposure. Though the trace elements of shielding concretes can be dominant sources of the produced activity in such cases, their concentrations are often missing from the input data of shielding-related Monte Carlo ...
arxiv