Dynamics of Cryogenic Jets: Non-Rayleigh Breakup and Onset of Nonaxisymmetric Motions

Boukharov, A.; Büscher, M.; Gerasimov, A. S.; Chernetsky, V.; Fedorets, P.; Maryshev, I N; Семенов, А.А.; Ginevskii, A. F.

doi:10.1103/physrevlett.100.174505

Cited by 16 publications

(4 citation statements)

References 22 publications

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“…2) is ≈ 0.53 for the argon beam and ≈ 0.26 for the hydrogen beam. These values are slightly different from that corresponding to the Rayleigh mode for fastest sinusoidal perturbation growth, which occurs for x ≈ 0.7, and are consistent with previous observations 24 .…”

Section: Droplet Beam Operationsupporting

confidence: 89%

“…The expanding liquid filament thus rapidly cools below its normal melting point and freezes well before Rayleigh breakup can take place 6,22 . The jet freezing can be circumvented by expanding the liquid into an atmosphere of the respective gas before injecting the resulting droplet stream into vacuum, a scheme that has enabled the production of hydrogen droplet beams for applications in nuclear physics research in a storage ring 23,24 . However, the droplet sources employed in these studies are characterized by extended dimensions and a substantial loss of the spatial synchronization of the triggered droplet beam on the vacuum side 23 , crucial features that preclude their use in experiments in which pulses from a high-power laser are focused to a micro-scale spot.…”

Section: Introductionmentioning

confidence: 99%

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Compact cryogenic source of periodic hydrogen and argon droplet beams for relativistic laser-plasma generation

Fraga

Kalinin

Kühnel

et al. 2012

Review of Scientific Instruments

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We present a cryogenic source of periodic streams of micrometer-sized hydrogen and argon droplets as ideal mass-limited target systems for fundamental intense laser-driven plasma applications. The highly compact design combined with a high temporal and spatial droplet stability makes our injector ideally suited for experiments using state-of-the-art high-power lasers in which a precise synchronization between the laser pulses and the droplets is mandatory. We show this by irradiating argon droplets with multi-Terawatt pulses.

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Section: Droplet Beam Operationsupporting

confidence: 89%

Section: Introductionmentioning

confidence: 99%

Compact cryogenic source of periodic hydrogen and argon droplet beams for relativistic laser-plasma generation

Fraga

Kalinin

Kühnel

et al. 2012

Review of Scientific Instruments

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“…A prototype of a corpuscular target has now been developed by groups, working jointly, from the MEI, the ITEF, and the Institute of Nuclear Physics (Jülich, Germany) [2]. It consists of the following basic systems: the main cryostat, cryostat-trap, and vacuum system, systems for supplying the working gases and cryogenic liquids, and a diagnostics system.…”

Section: Target Spectrometermentioning

confidence: 99%

Search for new forms of matter in antimatter–matter interactions in the panda experiment

Vasiliev¹,

Морозов²,

Mochalov³

et al. 2012

At Energy

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The Panda experiment is a key experiment at FAIR -European Facility for Antiproton and Ion Research, which is in the development stage in Darmstadt (Germany). The physical program of the experiment is focused on the search for exotic particles, research on hadron spectroscopy, the structure of nucleons, nuclear-matter effects, hypernuclei, and in other areas. New experimental forms of matter predicted by theory -glueballs and hybrids -are of great interest. They have not yet been observed. The PANDA facility will be assembled in the storage ring of the HESR antiproton beam. Antiprotons with energy from 1.5 to 15 GeV will be accumulated in the ring. Up to 2·10 7 interactions/sec are expected on the internal hydrogen (cluster or corpuscular) target. In addition to the high luminosity of the experiment (2·10 32 cm -2 ·sec -1 ), the beam will be monochromatic. Because of stochastic and electronic cooling, pulsed stretching of the beam is expected to be at the level 10 -4 -10 -5 , which makes it possible to measure the mass of the particles with record high resolution 100 keV. Domestic institutes are participating in the development of the PANDA facility.The objective of the program of the PANDA experiment (Antiproton Annihilation at Darmstadt) is to search for new extreme forms of matter, such as the theoretically predicted exotic hadrons -glue balls and hybrids. Glue balls consist of gluons -the carriers of the strong interactions, while hybrids are a mixture of quarks and gluons.Aside from this problem, the program of the experiment includes research in hadron and nuclear physics. In particular, this is the study of narrow states of charmonium above the threshold of DD-meson pair production. Another important direction is the study of hypernulcei, including binary, and charm-nuclei, where a strange (one or two) or charmed particle "is implanted" into a nucleus instead of an ordinary nucleon. The search for new forms of matter in an interaction of anti-

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“…In the community of particle physics, there is also a need for small spherical solid targets to study laser interactions or collisions with exotic ions. Two main teams contributed the development of spherical solid particles injectors in vacuum based on the Rayleigh Plateau instability [32][33][34] , assisted by a vibrating piezoelectric transducer. The main difference between their respective approaches resides in the way they cope with the necessity of letting the pressure surrounding the droplets decrease from the triple point pressure to vacuum.…”

Section: IImentioning

confidence: 99%

Controlled spherical deuterium droplets as Lagrangian tracers for cryogenic turbulence experiments

Bret,

Chartier,

Diribarne

et al. 2023

Review of Scientific Instruments

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The study of the smallest scales of turbulence by (Lagrangian) particle tracking faces two major challenges: the requirement of a 2D or 3D optical imaging system with sufficiently high spatial and temporal resolution and the need for particles that behave as passive tracers when seeded into the flow. While recent advances in the past decade have led to the development of fast cameras, there is still a lack of suitable methods to seed cryogenic liquid helium flows with mono-disperse particles of sufficiently small size, of the order of a few micrometers, and a density close enough to that of helium. Taking advantage of the surface tension, we propose two different techniques to generate controlled liquid spherical droplets of deuterium over a liquid helium bath. The first technique operates in a continuous mode by fragmenting a liquid jet, thanks to the Rayleigh–Taylor instability. This results in the formation of droplets with a diameter distribution of 2 ± 0.25DN, where DN is the diameter of the jet nozzle (DN = 20 μm in the present experiment). This method offers a high production rate, greater than 30 kHz. The second technique operates in a drop-on-demand mode by detaching droplets from the nozzle using pressure pulses generated using a piezoelectric transducer. This approach yields a much narrower diameter distribution of 2.1 ± 0.05DN but at a smaller production rate, in the range 500 Hz–2 kHz. The initial trajectories and shapes of the droplets, from the moment they are released from the nozzle until they fall 3 mm below, are investigated and discussed based on back-light illumination images.

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Dynamics of Cryogenic Jets: Non-Rayleigh Breakup and Onset of Nonaxisymmetric Motions

Cited by 16 publications

References 22 publications

Compact cryogenic source of periodic hydrogen and argon droplet beams for relativistic laser-plasma generation

Compact cryogenic source of periodic hydrogen and argon droplet beams for relativistic laser-plasma generation

Search for new forms of matter in antimatter–matter interactions in the panda experiment

Controlled spherical deuterium droplets as Lagrangian tracers for cryogenic turbulence experiments

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