Photonuclear Physics when a Multiterawatt Laser Pulse Interacts with Solid Targets

Ledingham, K. W. D.; Spencer, I.; McCanny, T.; Singhal, R.P.; Santala, M.; Clark, Ε. L.; Watts, I.; Beg, F. N.; Zepf, Matthew; Krushelnick, K.; Tatarakis, M.; Dangor, A. E.; Norreys, P.; Allott, R.; Neely, D.; Clark, Robert; Machacek, A.; Wark, J. S.; Cresswell, A.J.; Sanderson, David; Magill, J.

doi:10.1103/physrevlett.84.899

Cited by 233 publications

(102 citation statements)

References 21 publications

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“…Ultra-intense lasers on the order of approximately 10 20 W/cm 2 have produced bremsstrahlung photons through the generation of laser initiated plasma. During 2000, two institutions with ultra-intense lasers systems achieved the objective of laser induced photofission [12]- [14]. The accomplishment was achieved using the NOVA laser of Lawrence Livermore National Laboratory with a yield of 7 × 10 4 fissions of uranium-238 per joule of laser energy [13] [14].…”

Section: Background Of Photofissionmentioning

confidence: 99%

“…The accomplishment was achieved using the NOVA laser of Lawrence Livermore National Laboratory with a yield of 7 × 10 4 fissions of uranium-238 per joule of laser energy [13] [14]. The VULCAN laser of Rutherford Appleton Laboratory produced a yield of 2 × 10 4 fissions of uranium-238 per joule of laser energy [12] [14]. Another configuration incorporating a tabletop laser capable of attaining ultra-intense laser thresholds yielded 10 4 fissions per joule of laser energy with uranium-238 also as a target [14].…”

Section: Background Of Photofissionmentioning

confidence: 99%

“…Photofission incorporates the use of ultra-intense lasers on the order of approximately 10 20 W/cm 2 [12]- [14]. The phenomenon involves the generation of high energy electrons, bremsstrahlung photons, and nuclear interactions [13].…”

Section: Photofission Derived Propulsion a New Perspectivementioning

confidence: 99%

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Fundamental Architecture and Performance Analysis of Photofission Pulsed Space Propulsion System Using Ultra-Intense Laser

LeMoyne¹,

Mastroianni²

2015

JAMP

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Photofission enables a unique capability for the domain of non-chemical space propulsion. An ultra-intense laser enables the capacity to induce nuclear fission through the development of bremsstrahlung photons. A fundamental architecture and performance analysis of a photofission pulsed space propulsion system through the operation of an ultra-intense laser is presented. A historical perspective of previous conceptual nuclear fission propulsion systems is addressed. These applications use neutron derived nuclear fission; however, there is inherent complexity that has precluded further development. The background of photofission is detailed. The conceptual architecture of photofission pulsed space propulsion and fundamental performance parameters are established. The implications are the energy source and ultra-intense laser can be situated far remote from the propulsion system. Advances in supporting laser technologies are anticipated to increase the potential for photofission pulsed space propulsion. The fundamental performance analysis of the photofission pulsed space propulsion system indicates the architecture is feasible for further evaluation.

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Section: Background Of Photofissionmentioning

confidence: 99%

Section: Background Of Photofissionmentioning

confidence: 99%

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Fundamental Architecture and Performance Analysis of Photofission Pulsed Space Propulsion System Using Ultra-Intense Laser

LeMoyne¹,

Mastroianni²

2015

JAMP

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“…Laser-matter interactions as in industry, material processing [1], dentistry [2], microholography, photonuclear physics [3] rely on the use of short laser pulses for their interaction with matter. In recent decades more and more of these studies have been carried out by ultrashort laser pulses, i.e.…”

Section: Introductionmentioning

confidence: 99%

Compact Energy Measuring System for Short Pulse Lasers

Barna

Földeş

Gingl

et al. 2013

Metrology and Measurement Systems

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In experiments with short-pulse lasers the measurement control of the energy of the laser pulse is of crucial importance. Generally it is difficult to measure the amplitude of the pulses of short-pulse lasers using electronic devices, their response time being longer than the duration of the laser pulses. The electric response of the detector is still too fast to be directly digitized therefore a peak-hold unit can be used to allow data processing for the computer. In this paper we present a device which measures the energy of UV short (fs) pulses shot-byshot, digitizes and sends the data to the PC across an USB interface. The circuit is based on an analog peak detect and hold unit and the use of fiber optical coupling between the PC and the device provides a significant improvement to eliminate potential ground loops and to reduce conductive and radiated noise as well. The full development is open source and has been made available to download from our web page (http://www.noise.inf.u-szeged.hu/Instruments/PeakHold/).

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“…In these reactions, electrons or plasmas are encountered by a laser pulse and then, directly or by creating radiation, react with the nucleus. Typical examples are the production of MeV X-rays in a plasma that is generated by femtosecond laser pulses [10], the study of γ-induced nuclear reactions in plasma radiated by a super-intense laser [11,12], or neutron production in laser plasma [13,14]. Also, the coupling of nuclear and electronic transitions has been considered [15].…”

Section: Introductionmentioning

confidence: 99%

Dynamic nuclear Stark shift in superintense laser fields

2006

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The direct interaction of super-intense laser fields in the optical frequency domain with nuclei is studied. As main observable, we consider the nuclear AC-Stark shift of low-lying nuclear states due to the off-resonant excitation by the laser field. We include the case of accelerated nuclei to be able to control the frequency and the intensity of the laser field in the nuclear rest frame over a wide range of parameters. We find that AC-Stark shifts of the same order as in typical quantum optical systems relative to the respective transition frequencies are feasible with state-of-the-art or near-future laser field intensities and moderate acceleration of the target nuclei. Along with this shift, we find laser-induced modifications to the proton root-mean-square radii and to the proton density distribution. We thus expect direct laser-nucleus interaction to become of relevance together with other super-intense light-matter interaction processes such as pair creation.

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Photonuclear Physics when a Multiterawatt Laser Pulse Interacts with Solid Targets

Cited by 233 publications

References 21 publications

Fundamental Architecture and Performance Analysis of Photofission Pulsed Space Propulsion System Using Ultra-Intense Laser

Fundamental Architecture and Performance Analysis of Photofission Pulsed Space Propulsion System Using Ultra-Intense Laser

Compact Energy Measuring System for Short Pulse Lasers

Dynamic nuclear Stark shift in superintense laser fields

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