Search Results - "Wasem, Joseph"
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Impact of neutron energy on asteroid deflection performance
Published in Acta astronautica (01-06-2021)“…In the future, a hazardous asteroid will find itself on a collision course with Earth. For asteroids of moderate size or larger, a nuclear device is one of…”
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Options and uncertainties in planetary defense: Impulse-dependent response and the physical properties of asteroids
Published in Acta astronautica (01-01-2020)“…Though rare, asteroid impacts are inevitable, and with the current state of technology, kinetic impactors are the preferred but not the complete solution. If…”
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Neutron-Antineutron Oscillations from Lattice QCD
Published in Physical review letters (22-04-2019)Get full text
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X-Ray Energy Deposition Model for Simulating Asteroid Response to a Nuclear Planetary Defense Mitigation Mission
Published in The planetary science journal (01-12-2023)“…In the event of a potentially catastrophic asteroid impact, with sufficient warning time, deploying a nuclear device remains a powerful option for planetary…”
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Lattice QCD calculation of nuclear parity violation
Published in Physical review. C, Nuclear physics (27-02-2012)Get full text
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Neutron-Antineutron Oscillations from Lattice QCD
Published in Physical review letters (26-04-2019)“…Fundamental symmetry tests of baryon number violation in low-energy experiments can probe beyond the standard model (BSM) explanations of the matter-antimatter…”
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A simplified approach to uncertainty quantification for orbits in impulsive deflection scenarios
Published in Acta astronautica (01-11-2014)“…For the majority of near-Earth Asteroid (NEA) impact scenarios, optimal deflection strategies use a massive impactor or a nuclear explosive, either of which…”
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Journal Article -
8
A simplified approach to uncertainty quantification for orbits in impulsive deflection scenarios
Published in Acta astronautica (03-07-2014)“…For the majority of near-Earth Asteroid (NEA) impact scenarios, optimal deflection strategies use a massive impactor or a nuclear explosive, either of which…”
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Journal Article -
9
Blow-off momentum from melt and vapor in nuclear deflection scenarios
Published in Acta astronautica (01-10-2014)“…For Earth-impacting objects that are large in size or have short warning times nuclear explosives are an effective threat mitigation response. Nuclear-based…”
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Options and uncertainties in planetary defense: Mission planning and vehicle design for flexible response
Published in Acta astronautica (01-02-2018)“…This paper is part of an integrated study by NASA and the NNSA to quantitatively understand the response timeframe should a threatening Earth-impacting…”
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Journal Article -
12
Options and uncertainties in planetary defense: Impulse-dependent response and the physical properties of asteroids
Published in Acta astronautica (15-10-2019)“…In this paper we discuss that though rare, asteroid impacts are inevitable, and with the current state of technology, kinetic impactors are the preferred but…”
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Journal Article -
13
Options and Uncertainties in Planetary Defense: Mission Planning and Vehicle Design for Flexible Response
Published in Acta astronautica (22-12-2017)“…This paper is part of an integrated study by NASA and the NNSA to quantitatively understand the response timeframe should a threatening Earth-impacting…”
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Journal Article -
14
Options and Uncertainties in Planetary Defense: Mission Planning and Vehicle Design for Flexible Response
Published in Acta astronautica (22-12-2017)“…This paper is part of an integrated study by NASA and the NNSA to quantitatively understand the response timeframe should a threatening Earth-impacting…”
Get full text
Journal Article -
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Neutron Energy Effects on Asteroid Deflection
Published in 2020 IEEE Aerospace Conference (01-03-2020)“…The impact of the physical geometry of source versus target produced by a nuclear device used for neutron irradiation and energy deposition as a means of…”
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Conference Proceeding -
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On the Extraction of Observables from Lattice QCD and the First Lattice Calculation of Nuclear Parity Violation
Published 01-01-2010“…The fundamental field theory for nuclear physics interactions is quantum chromodynamics (QCD). Currently the only known way to calculate observables directly…”
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Dissertation -
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Lattice QCD Calculation of Nuclear Parity Violation
Published 14-03-2012“…Phys. Rev. C 85, 022501(R) (2012) We present the first lattice QCD calculation of the leading-order momentum-independent parity violating coupling between…”
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On the Extraction of Observables from Lattice QCD and the First Lattice Calculation of Nuclear Parity Violation
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Dissertation -
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Lattice QCD determination of neutron-antineutron matrix elements with physical quark masses
Published 17-05-2019“…Phys. Rev. D 99, 074510 (2019) Matrix elements of six-quark operators are needed to extract new physics constraints from experimental searches for…”
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Journal Article -
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Neutron-antineutron oscillations from lattice QCD
Published 17-05-2019“…Phys. Rev. Lett. 122, 162001 (2019) Fundamental symmetry tests of baryon number violation in low-energy experiments can probe beyond the Standard Model (BSM)…”
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Journal Article