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Related papers: Uncertainty quantification in $(p,n)$ reactions

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We describe a computational framework linking Uncertainty Quantification (UQ) methods for continuum problems depending on random parameters with Equation-Free (EF) methods for performing continuum deterministic numerics by acting directly…

Dynamical Systems · Mathematics 2007-05-23 Yu Zou , Ioannis G. Kevrekidis

The dispersive optical model (DOM) is employed to simultaneously describe elastic nucleon scattering data for ${}^{40}$Ca, ${}^{48}$Ca, and ${}^{208}$Pb as well as observables related to the ground state of these nuclei, with emphasis on…

Nuclear Theory · Physics 2019-10-02 W. H. Dickhoff

A study of high energy (43--68 MeV/nucleon) one-neutron removal reactions on a range of neutron-rich psd-shell nuclei (Z = 5--9, A = 12--25) has been undertaken. The inclusive longitudinal and transverse momentum distributions for the core…

Nuclear Experiment · Physics 2009-11-10 E. Sauvan , F. Carstoiu , N. A. Orr

Information about the physical properties of astrophysical objects cannot be measured directly but is inferred by interpreting spectroscopic observations in the context of atomic physics calculations. Ratios of emission lines, for example,…

The change in mass of a nucleon, arising from its interactions with other nucleons inside the target, results in velocity-dependent terms in the Schr\"odinger equation that describes nucleon scattering. It has recently been suggested in a…

Nuclear Theory · Physics 2019-05-22 N. K. Timofeyuk

We study (p,2p) and (p,pn) reactions at proton energies in the range of 100 MeV -- 1 GeV. Our purpose is to explore the most sensitive observables in unpolarized reactions with inverse kinematics involving radioactive nuclei. We formulate a…

Nuclear Theory · Physics 2014-09-16 T. Aumann , C. A. Bertulani , J. Ryckebusch

Differential cross sections of ($p,n$) and ($^3$He,$t$) charge-exchange reactions leading to the excitation of the isobaric analog state (IAS) of the target nucleus are calculated with the distorted wave Born approximation. The $G$-matrix…

Nuclear Theory · Physics 2021-02-10 Phan Nhut Huan , Nguyen Le Anh , Bui Minh Loc , Isaac Vidana

The composition of the space radiation environment inside spacecrafts is modified by the interaction with shielding material, with equipment and even with the astronauts' bodies. Accurate quantitative estimates of the effects of nuclear…

Nuclear Theory · Physics 2011-03-07 Davide Mancusi , Alain Boudard , Joseph Cugnon , Jean-Christophe David , Sylvie Leray

We have recently developed a nuclear model, which is a natural extension of the $pn$-QRPA model, specially designed to describe double charge exchange (DCE) processes generated by two-body DCE transition operators. It is based on the…

Nuclear Theory · Physics 2025-02-26 C. De Conti , V. dos S. Ferreira , A. R. Samana , C. A. Barbero , F. Krmpotić

Uncertainty Quantification (UQ) is an essential step in computational model validation because assessment of the model accuracy requires a concrete, quantifiable measure of uncertainty in the model predictions. The concept of UQ in the…

Applications · Statistics 2023-03-24 Xu Wu , Ziyu Xie , Farah Alsafadi , Tomasz Kozlowski

Particle production in ultrarelativistic heavy ion collisions depends on the details of the nucleon density distributions in the colliding nuclei. We demonstrate that the charged hadron multiplicity distributions in isobaric collisions at…

Nuclear Theory · Physics 2020-11-25 Hanlin Li , Hao-jie Xu , Ying Zhou , Xiaobao Wang , Jie Zhao , Lie-Wen Chen , Fuqiang Wang

Future neutrino-oscillation experiments are expected to bring definite answers to the questions of neutrino-mass hierarchy and violation of charge-parity symmetry in the lepton sector. To realize this ambitious program it is necessary to…

High Energy Physics - Phenomenology · Physics 2017-05-15 Artur M Ankowski , Camillo Mariani

Understanding the radiogenic neutron production rate through the (${\alpha}$, n) reaction is crucial in many areas of physics, including dark matter searches, neutrino studies, and nuclear astrophysics. In addition to its relevance for…

We propose a model based on quantum molecular dynamics (QMD) incorporated with statistical decay model (SDM) to describe various nuclear reactions in an unified way. In this first part of the work, the basic ingredients of the model are…

Computationally-guided material discovery is being increasingly employed using a descriptor-based screening through the calculation of a few properties of interest. A precise understanding of the uncertainty associated with first principles…

Materials Science · Physics 2016-08-22 Zeeshan Ahmad , Venkatasubramanian Viswanathan

Hadronic interaction models at cosmic ray (CR) energies are inherently uncertain due to the lack of a fundamental theoretical description of soft hadronic and nuclear interactions and the large extrapolation required from collider energies…

High Energy Astrophysical Phenomena · Physics 2011-05-26 R. D. Parsons , C. Bleve , S. S. Ostapchenko , J. Knapp

Alpha elastic scattering angular distributions of the 106Cd(alpha,alpha)106Cd reaction were measured at three energies around the Coulomb barrier to provide a sensitive test for the alpha + nucleus optical potential parameter sets.…

We discuss how to reduce theoretical uncertainties in the neutrino-deuteron breakup cross-sections crucial to the Sudbury Neutrino Observatory's efforts to measure the solar neutrino flux. In effective field theory, the dominant…

Nuclear Theory · Physics 2009-11-07 Malcolm Butler , Jiunn-Wei Chen , Petr Vogel

It is not common to consider the role of uncertainties in the rate coefficients used in interstellar gas-phase chemical models. In this paper, we report a new method to determine both the uncertainties in calculated molecular abundances and…

Astrophysics · Physics 2009-11-11 Valentine Wakelam , Franck Selsis , Eric Herbst , Paola Caselli
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