Beam‐induced electron modulations observed during TSS 1R

Rubin, A. G.; Burke, William J.; Gough, M. P.; Machuzak, J. S.; Gentile, L. C.; Huang, C. Y.; Hardy, D. A.; Thompson, D. C.; Raitt, W. J.

doi:10.1029/1999ja900127

Cited by 5 publications

(5 citation statements)

References 29 publications

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“…The application of electron particle auto-correlators to study wave-particle interactions continued with experiments on later sounding rocket flights (Gough & Urban 1983;Gough, Christiansen & Wilhelm 1990) and with the inception of active experiments, where an electron beam launched by one spacecraft is measured by another and the distortion of that received beam provides a sensitive probe of the physics of wave-particle interactions. Such active experiments where conducted during space shuttle flights using tethered satellites (Gough et al 1995(Gough et al , 1997(Gough et al , 1998aHuang et al 1998;Burke et al 1999;Rubin et al 1999) and with dual payload sounding rocket flights (Gough, Hardy & James 1998b;Huang et al 2001). More recently, all four of the Cluster-II spacecraft were equipped with particle auto-correlators for the electrons (Woolliscroft et al 1997), and early results from measurements by this instrument, as well as a thorough review of previous particle auto-correlator experiments, are presented in Gough et al (2003).…”

Section: Previous Investigations Of Waves and Particlesmentioning

confidence: 99%

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Diagnosing collisionless energy transfer using field–particle correlations: Vlasov–Poisson plasmas

2017

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Turbulence plays a key role in the conversion of the energy of large-scale fields and flows to plasma heat, impacting the macroscopic evolution of the heliosphere and other astrophysical plasma systems. Although we have long been able to make direct spacecraft measurements of all aspects of the electromagnetic field and plasma fluctuations in near-Earth space, our understanding of the physical mechanisms responsible for the damping of the turbulent fluctuations in heliospheric plasmas remains incomplete. Here we propose an innovative field–particle correlation technique that can be used to measure directly the secular energy transfer from fields to particles associated with collisionless damping of the turbulent fluctuations. Furthermore, this novel procedure yields information about the collisionless energy transfer as a function of particle velocity, providing vital new information that can help to identify the dominant collisionless mechanism governing the damping of the turbulent fluctuations. Kinetic plasma theory is used to devise the appropriate correlation to diagnose Landau damping, and the field–particle correlation technique is thoroughly illustrated using the simplified case of the Landau damping of Langmuir waves in a 1D-1V (one dimension in physical space and one dimension in velocity space) Vlasov–Poisson plasma. Generalizations necessary to apply the field–particle correlation technique to diagnose the collisionless damping of turbulent fluctuations in the solar wind are discussed, highlighting several caveats. This novel field–particle correlation technique is intended to be used as a primary analysis tool for measurements from current, upcoming and proposed spacecraft missions that are focused on the kinetic microphysics of weakly collisional heliospheric plasmas, including the Magnetospheric Multiscale (MMS), Solar Probe Plus, Solar Orbiter and Turbulence Heating ObserveR (THOR) missions.

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Section: Previous Investigations Of Waves and Particlesmentioning

confidence: 99%

“…1999; Rubin et al. 1999) and with dual payload sounding rocket flights (Gough, Hardy & James 1998 b ; Huang et al. 2001).…”

Section: Introductionmentioning

confidence: 99%

Diagnosing collisionless energy transfer using field–particle correlations: Vlasov–Poisson plasmas

2017

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“…Observations of wave‐particle interactions have been sought over four decades. The earliest experiments flew on sounding rockets launched from Poker Flat, Alaska into the aurora, due to early speculation that resonant electrons preferentially “bunch” at a specific phase driven by large‐amplitude Langmuir waves (Gough, Burke, et al., 1998; Gough, Hardy, et al., 1998; Gough & Urban, 1983; Gough et al., 1995, 1997, 1990; Rubin et al., 1999; Spiger et al., 1974, 1976; Lin et al., 1995; Woolliscroft et al., 1997). However, these were examples of particle auto‐correlators that yielded information about the particle count rate statistics and not necessarily about energy transfer.…”

Section: Introductionmentioning

confidence: 99%

PATCH: Particle Arrival Time Correlation for Heliophysics

et al. 2021

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One of the greatest conundrums we have in modern spacecraft missions is the fact that instruments are capable of nearly continuously sampling high resolution, but due to telemetry limitations between the spacecraft and the Earth, we can afford to downlink only a small fraction if it. If we know a priori what kind of measurements we seek, data compression can be done by performing data analysis onboard the spacecraft and then sending back the post-processed data. That way, we would be able to gain insight from a larger fraction of the high-resolution data collected, and not limit our scientific return to a relatively small sample. In this study, we present a prescription for processing onboard measurements of turbulence-driven energy transfer from fields to particles.Completely interpreting the turbulent cascade of energy, initially driven at large spatial scales (by phenomena such as solar granules or Coronal Mass Ejections) and dissipated at smaller scales into plasma heat (or some other form of particle energization), is the spearhead problem in space plasma turbulence. Understanding the nature of turbulent dissipation mechanisms that govern the physics in the transition region, from the inertial to the dissipation range of the turbulent spectrum of energy, is a key component in this puzzle. The field-particle correlation (FPC) technique can differentiate between mechanisms through its velocity-space signature; this is done by quantifying the energy transfer between fields and particles, as a function of velocity, after performing a long-time average of the Lorentz force term in the Vlasov equation

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“…In the first of these, bunching of 8-10 keV auroral electrons were detected in a "mother-daughter" experiment where the sounding rocket had a 'mother' (main payload) that measured 0.2-3.6 MHz waves and 8-10 keV energetic particles accompanied with a 'daughter' (sub payload) equipped with an artificial electron gun . Later, the bunching technique also successfully detected electron modulation with similar active experiments STS-46 and STS-75 which flew the SPREE instrument, measuring 10 eV-10 keV electrons and a 1 keV electron gun which stimulated wave-particle interactions (Gough et al, 1995(Gough et al, , 1998aRubin et al, 1999). Natural auroral beam experiments also yielded promising results of the buncher technique including ESB (Gough and Urban, 1983) and CAESAR (Gough et al, 1990), which observed modulation energies just below the velocity distribution maximum and a section with a positive velocity derivative in the particle distribution function.…”

Section: History Of Wave-particle Correlatorsmentioning

confidence: 95%

“…The earliest experiments flew on sounding rockets launched from Poker Flat, Alaska into the aurora, due to early speculation that resonant electrons preferentially "bunch" at a specific phase in occurrence with large-amplitude Langmuir waves (Spiger et al, 1974(Spiger et al, , 1976Gough and Urban, 1983;Gough et al, 1990Gough et al, , 1995Gough et al, , 1998aRubin et al, 1999;Lin et al, 1995;Woolliscroft et al, 1997). However, these were examples of particle auto-correlators which yielded information about the particle count rate statistics, and not necessarily about energy transfer.…”

Section: Comparison To Past Wave-particle Interaction Measurement Metmentioning

confidence: 99%

Turbulence in heliospheric plasmas

Verniero¹

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Beam‐induced electron modulations observed during TSS 1R

Cited by 5 publications

References 29 publications

Diagnosing collisionless energy transfer using field–particle correlations: Vlasov–Poisson plasmas

Diagnosing collisionless energy transfer using field–particle correlations: Vlasov–Poisson plasmas

PATCH: Particle Arrival Time Correlation for Heliophysics

Turbulence in heliospheric plasmas

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