Fusion neutron detector calibration using a table-top laser generated plasma neutron source

Hartke, R.; Symes, D. R.; Buersgens, F.; Ruggles, L. E.; Porter, J. L.; Ditmire, T.

doi:10.1016/j.nima.2004.11.032

Cited by 16 publications

(4 citation statements)

References 24 publications

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“…The relative delay with > 60 ns corresponds to the sum of the traveling time of deuterium inside the booster and the TOF of 2.45-MeV neutron to the detector. Assuming the neutron isotropic emission, the neutron yield was ~10 5 per shot. Such an efficient neutron generation was stably observed during continuous 100 shots (See Fig.…”

Section: Tof (Ns)mentioning

confidence: 99%

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Efficient neutron generation from solid-nanoparticle explosions driven by DPSSL-pumped high-repetition rate femtosecond laser pulse

Watari

Matsukado

Sekine

et al. 2016

J. Phys.: Conf. Ser.

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Abstract. We propose novel neutron source using high-intensity laser based on the cluster fusion scheme. We developed DPSSL-pumped high-repetition-rate 20-TW laser system and solid nanoparticle target for neutron generation demonstration. In our neutron generation experiment, high-energy deuterons were generated from coulomb explosion of CD solidnanoparticles and neutrons were generated by DD fusion reaction. Efficient and stable neutron generation was obtained by irradiating an intense femtosecond laser pulse of >2×10 18 W/cm 2 . A yield of ~10 5 neutrons per shot was stably observed during 0.1-1 Hz continuous operation. IntroductionRecent developments of high-intensity laser enable us to evolve a new type neutron source. A number of experiments [1][2][3][4][5] demonstrated the possibility of laser-driven fusion using pure D 2 or CD 4 clusters. In these works, multi-keV deuterium ions were generated by Coulomb explosion of a few nanometres clusters. Since the cross-section of deuterium-deuterium (DD) reaction reaches its maximum at 1750 keV with center-of-mass system, much higher ion energy is required for efficient neutron generation. Features of the Coulomb explosion are that ion energy distribution function is proportional to the square root of its energy and the maximum energy is proportional to its radius [6,7]. Larger particles result in higher ion energy, although an intense laser irradiation is required for expelling electrons from the larger particles. We fabricated the solid density deuterated-polystyrene (CD) nanoparicles of 250 nm in diameter to obtain high ion energy of ~1 MeV. Stable neutron generation was demonstrated by irradiating 20-TW diode-pumped-solid-state-laser (DPSSL) to these solid nanoparticles.

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Section: Tof (Ns)mentioning

confidence: 99%

“…A number of experiments [1][2][3][4][5] demonstrated the possibility of laser-driven fusion using pure D 2 or CD 4 clusters. In these works, multi-keV deuterium ions were generated by Coulomb explosion of a few nanometres clusters.…”

Section: Introductionmentioning

confidence: 99%

Efficient neutron generation from solid-nanoparticle explosions driven by DPSSL-pumped high-repetition rate femtosecond laser pulse

Watari

Matsukado

Sekine

et al. 2016

J. Phys.: Conf. Ser.

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“…Recent experiments [1][2][3][4][5][6][7][8][9][10][11][12][13][14] and theoretical simulations [13][14][15][16][17][18][19] demonstrated the possibility of laser-driven fusion reactions employing deuterium clusters. For applications involving nuclear fusion, clusters are superior to both solids and gases due to their distinguished properties.…”

Section: Introductionmentioning

confidence: 99%

Neutron production from high-intensity laser–cluster induced fusion reactions

Petrov¹,

Davis²,

Velikovich³

2006

Plasma Phys. Control. Fusion

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The fusion neutron yield from a compact neutron source is studied. Laserirradiated deuterium clusters serve as a precursor of high-energy deuterons, which react with a tritium target and produce copious amounts of neutrons in fusion reactions. The Coulomb explosion of deuterium clusters with initial radius of 5 to 20 nm irradiated by a sub-picosecond laser with intensity ranging from 10 15 to 10 18 W cm −2 is examined theoretically by a MD model. The dependence of the mean and maximum ion kinetic energy, ion energy distribution function and conversion efficiency of laser energy to ion kinetic energy is investigated. The fusion yield was estimated from an ion beam-target model. A high neutron yield of ∼10 6 -10 7 neutrons/Joule is obtainable for peak laser intensity of 10 16 -10 18 W cm −2 , laser wavelength of 0.8-1 µm and clusters with an initial radius of ∼20 nm.

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“…J class diode pumped solid state laser in the world. ．クラスター核融合方式による中性子生成については D 2 や CD 4 クラスターを用いた成果が数多く報告されている[12][13][14][15][16] ．これらの実証研究では数 nm サイズのクラスター群に 10 17 W/cm 2 を超える高強度レーザーを照射し，電子を引き剥がすことでクーロン爆発を引き起こしている．これにより数 keV…”

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Current Status of Laser Fusion Research at HAMAMATSU PHOTONICS K.K.

WATARI,

SEKINE,

KURITA,

et al. 2021

The Review of Laser Engineering

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Since 2010 at Hamamatsu Photonics K.K., we've been constructing a 100-Joule class, diode-pumped solid-state laser (DPSSL) based facility called TERU for research and development on component technologies and related industrial applications. Critical technologies and design parameters for kilo-Joule class DPSSLs have been evaluated through the development of a DPSSL driver for TERU. Laser irradiation experiments have started to research the fundamental physics of ICF's implosion process at the TERU facility. Its commissioning started with a DPSSL output of 50 J in nanoseconds at 0.5 Hz.

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Fusion neutron detector calibration using a table-top laser generated plasma neutron source

Cited by 16 publications

References 24 publications

Efficient neutron generation from solid-nanoparticle explosions driven by DPSSL-pumped high-repetition rate femtosecond laser pulse

Efficient neutron generation from solid-nanoparticle explosions driven by DPSSL-pumped high-repetition rate femtosecond laser pulse

Neutron production from high-intensity laser–cluster induced fusion reactions

Current Status of Laser Fusion Research at HAMAMATSU PHOTONICS K.K.

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