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In this paper we discuss the advantages and challenges of utilizing Fission Fragment Rocket Engines (FFREs) to dramatically reduce transit time in space travel, for example, traveling to Mars. We discuss methods to decrease the size and…

Physics and Society · Physics 2024-02-07 John Gahl , Andrew K. Gillespie , Cuikun Lin , R. V. Duncan

Emerging studies are geared toward exploring new methods of nuclear rocket propulsion to provide more efficient space transit beyond Earth's orbit. One method is to employ a Fission Fragment Rocket Engine utilizing fissionable layers…

Instrumentation and Detectors · Physics 2024-05-29 Sandeep Puri , Andrew Gillespie , Ian Jones , Cuikun Lin , Ryan Weed , Robert V. Duncan

The thesis presents investigations on the angular and mass distribution of fission fragments on heavy ion induced fission reactions. The present investigations address current issues in heavy ion induced fission reactions like finding the…

Nuclear Experiment · Physics 2009-09-29 T. K. Ghosh

Fission fragments from 1 A GeV 238U projectiles irradiating a hydrogen target were investigated by using the fragment separator FRS for magnetic selection of reaction products including ray-tracing and DE-ToF techniques. The momentum…

Application of the nuclear track emulsion technique (NTE) in radioactivity and nuclear fission studies is discussed. It is suggested to use a HSP-1000 automated microscope for searching for a collinear cluster tri-partition of heavy nuclei…

Peripheral collisions with radioactive heavy-ion beams at relativistic energies are discussed as an innovative approach for probing the transient regime experienced by fissile systems evolving towards quasi-equilibrium. A dedicated…

Nuclear Experiment · Physics 2014-11-20 C. Schmitt , K. -H. Schmidt , A. Kelić , A. Heinz , B. Jurado , P. N. Nadtochy

The availability of high-intensity, heavy-ion beams coupled to sensitive, large solid-angleacceptance spectrometers has enabled a detailed examination of the fission fragments produced in induced-fission reactions. The abrasion-fission…

Eighty years after its experimental discovery, a microscopic description of induced nuclear fission based solely on the interactions between neutrons and protons and quantum many-body methods still poses formidable challenges. The goal of…

Nuclear Theory · Physics 2015-06-17 N. Schunck , D. Duke , H. Carr , A. Knoll

We investigate the systematics of fission barriers in superheavy elements in the range Z = 108-120 and N = 166-182. Results from two self-consistent models for nuclear structure, the relativistic mean-field (RMF) model as well as the…

Nuclear Theory · Physics 2014-11-18 T. Buervenich , M. Bender , J. A. Maruhn , P. -G. Reinhard

Recent theoretical and experimental results have brought renewed interest and focus on the topic of fission fragment angular momentum. Measurements of neutrons and $\gamma$ rays in coincidence with fission fragments remain the most valuable…

It has been shown that minimum free energy structure for RNAs and RNA-RNA interaction is often incorrect due to inaccuracies in the energy parameters and inherent limitations of the energy model. In contrast, ensemble based quantities such…

Biomolecules · Quantitative Biology 2013-01-09 Hamidreza Chitsaz , Elmirasadat Forouzmand , Gholamreza Haffari

Two methods of the total excitation energy (TXE) partition between complementary fission fragments (FF) are compared: one based on the "classical" hypothesis of prompt neutron emission from fully accelerated FF with both fragments having…

Nuclear Theory · Physics 2011-03-09 C. Manailescu , A. Tudora , F. -J. Hambsch , C. Morariu , S. Oberstedt

An overview is given on some of the main advances in experimental methods, experimental results and theoretical models and ideas of the last years in the field of nuclear fission. New experimental approaches extended the availability of…

Nuclear Theory · Physics 2019-01-16 Karl-Heinz Schmidt , Beatriz Jurado

Graphene hydrogels were created and loaded with uranyl nitrate or thorium nitrate and freeze-dried to produce graphene aerogel nuclear fuels. These aerogels had densities between 0.018-0.035 g/cm3 and consisted of ~7.3 +- 0.5%…

Materials Science · Physics 2026-03-18 Noah D'Amico , Sandeep Puri , Ian Jones , Andrew Gillespie , Cuikun Lin , Bo Zhao , R. V. Duncan

Particle breakage due to collisional interactions plays a vital role in the development of several phenomena in science and engineering. The nonlinear collisional breakage equations (NCBEs) are a significant set of equations in this…

Numerical Analysis · Mathematics 2026-04-14 Arushi Arushi , Naresh Kumar

$\textbf{Background}$ More than half of all the elements heavier than iron are made by the rapid neutron capture process (or r process). For very neutron-rich astrophysical conditions, such at those found in the tidal ejecta of neutron…

Nuclear Theory · Physics 2020-06-24 Jhilam Sadhukhan , Samuel A. Giuliani , Zachary Matheson , Witold Nazarewicz

Jet reconstruction and jet fragmentation variables provide important information to study the interaction between hard scattered partons and the Quark-Gluon Plasma. This paper presents the measurement of the inclusive cross section for…

Nuclear Experiment · Physics 2019-08-13 Rongrong Ma

Fission fragment yield evaluations are one of the important nuclear data studies. Fission accompanies various physical observables such as prompt fission neutron, prompt fission gamma, and delayed-neutrons. When evaluating fission fragment…

Nuclear Theory · Physics 2024-04-30 Futoshi Minato , Osamu Iwamoto

The Deep Underground Neutrino Experiment currently under construction in the US will be a long-baseline neutrino oscillation experiment dedicated to determining the neutrino mass ordering and to measure the CP violation phase in the lepton…

High Energy Physics - Experiment · Physics 2025-04-18 F. Marinho
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