Electromagnetic Pulse and Time-Dependent Escape of Neutrons and Gamma Rays from a Nuclear Explosion

Sandmeier, H.A.; Dupree, S.A.; Hansen, G.E.

doi:10.13182/nse72-a22492

Cited by 28 publications

(7 citation statements)

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“…The convenient non-metric units of a kiloton (1kt = 10 12 cal = 1.31•10 23 fission events) and a shake (1sh = 10 −8 s) will also be used in the following [4].…”

Section: Trinity Implosion Bombmentioning

confidence: 99%

“…Fig. (4) shows a snapshot taken in 1953 shortly after ignition of the device used in the nuclear weapons test Upshot-Knothole Grable, where an estimated 15kt gun-type fission bomb exploded 160m above ground, producing finally a spherically symmetric fireball, despite the asymmetric aspects of the pre-ignition device [6]. Supposing that a considerable part Y B of the total yield Y of an atomic bomb is converted into the kinetic energy of the matter moving at a distance R(t) from the explosion center with a velocity Ṙ(t), and neglecting the mass of the bomb for fireballs with a radius larger than 20m and the energy of the radiation inside the ball, one has from…”

Section: Trinity Implosion Bombmentioning

confidence: 99%

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Point kinetic model of the early phase of a spherically symmetric nuclear explosion

Aste

2016

Preprint

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A concise point kinetic model of the explosion of a prompt supercritical sphere driven by a nuclear fission chain reaction is presented. The findings are in good agreement with the data available for Trinity, the first detonation of a nuclear weapon conducted by the United States Army as part of the Manhattan project. Results are presented for an implosion device containing pure plutonium-239, although the model can be easily applied to, e.g., uranium-235. The fizzle probability and corresponding yield of a fission bomb containing plutonium recovered from reactor fuel and therefore containing significant amounts of spontaneously fissioning plutonium-240 which can induce a predetonation of the device is illustrated by adding a corresponding source term in the presented model. Related questions whether a bomb could be made by developing countries or terrorist organizations can be tackled this way. Although the information needed to answer such questions is in the public domain, it is difficult to extract a consistent picture of the subject for members of organizations who are concerned about the proliferation of nuclear explosives.

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“…The convenient non-metric units of a kiloton (1kt = 10 12 cal = 1.31•10 23 fission events) and a shake (1sh = 10 −8 s) will also be used in the following [4].…”

Section: Trinity Implosion Bombmentioning

confidence: 99%

Section: Trinity Implosion Bombmentioning

confidence: 99%

Point kinetic model of the early phase of a spherically symmetric nuclear explosion

Aste

2016

Preprint

View full text Add to dashboard Cite

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“…For our calculations we adopt a very simple model of the active zone associated with a low-yield nuclear explosion [11]. We assume that it can be represented as a medium consisting of fissioning nuclei, fission products, light charged particles, neutrons, and photons.…”

Section: Main Physical Processes Contributing To Explosive Nucleosyntmentioning

confidence: 99%

“…According to ref. [11], the neutron multiplication process should be over within the time interval of about 1.5•10 −7 sec after beginning of the chain reaction. To this time the density of free neutrons increases exponentially and reaches the maximum values estimated above.…”

Section: Physical Conditions In the Active Zonementioning

confidence: 99%

Possibility of Synthesizing Superheavy Elements in Nuclear Explosions

Botvina

Mishustin

Zagrebaev

et al. 2010

Int. J. Mod. Phys. E

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The possibility to produce superheavy elements in the course of low-yield nuclear explosions is analyzed within a simple kinetic model which includes neutron capture, γ-emission, fission and particle evaporation from excited nuclei. We have calculated average numbers of absorbed neutrons as well as mass distributions of U and Cm nuclei exposed to an impulsive neutron flux as functions of its duration. It is demonstrated that detectable amounts of heavy nuclei absorbing from 20 to 60 neutrons may be produced in this process. According to an optimistic scenario, after multiple β-decay such nuclei may reach the long-living elements of the predicted "island of stability".

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“…Gamma-rays are ubiquitous in the universe, from neutron stars, pulsars, supernova explosions, and regions around black holes [1,2]. They are also generated on earth [3,4] by nuclear explosions, lightning, and radioactive decays. It's known that gamma-rays are widely used in radioactive tracer [5] and treatment of malignant tumors [6].…”

mentioning

confidence: 99%

High Efficiency Gamma-Ray Flash Generation via Multiple Compton Scattering

Gong,

Hu,

Shou

et al. 2016

Preprint

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Gamma-ray flash generation in near critical density (NCD) target irradiated by four symmetrical colliding laser pulses is numerically investigated. With peak intensities about 10 23 W/cm 2 , the laser pulses boost electron energy through direct laser acceleration, while pushing them inward with the ponderomotive force. After backscattering with counter-propagating laser, the accelerated electron is trapped in the optical lattice or the electromagnetic standing waves (SW) created by the coherent overlapping of the laser pulses, and emits gamma-ray photons in Multiple Compton Scattering regime, where electrons act as a medium transferring energy from the laser to gamma-rays. The energy conversion rate from laser pulses to gamma-ray can be as high as 50%.

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Electromagnetic Pulse and Time-Dependent Escape of Neutrons and Gamma Rays from a Nuclear Explosion

Cited by 28 publications

References 0 publications

Point kinetic model of the early phase of a spherically symmetric nuclear explosion

Point kinetic model of the early phase of a spherically symmetric nuclear explosion

Possibility of Synthesizing Superheavy Elements in Nuclear Explosions

High Efficiency Gamma-Ray Flash Generation via Multiple Compton Scattering

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