Hole growth characterisation for hypervelocity impacts in thin targets

Gardner, David J.; McDonnell, J. A. M.; Collier, I.

doi:10.1016/s0734-743x(96)00047-4

Cited by 33 publications

(25 citation statements)

References 3 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Figure 1a is an example of one of the smallest holes imaged, which have diameters close to the thickness of the film f and are likely to have a HVI origin. These holes are close to the particle detection limit/ ballistic limit F max , of the films as defined by McDonnell and Sullivan [1992] where D h = f. The ballistic limit can also be defined at D h = 0 [Gardner et al, 1997], and holes have been observed in the film with diameters as small as D h = 0.4f.…”

Section: Imaging and Analysis Techniquessupporting

confidence: 81%

“…Of the available equations, only those of Carey et al [1985] (the CMD formula) and Gardner et al [1997] (the GMC formula) attempt to characterize hole growth for impacts where D h $ f. The GMC formula is scaled to experimental impact data from Hörz et al [1994] and is generally more reliable close to the ballistic limit than the CMD formula. The GMC formula is therefore used here to calculate particle diameters.…”

Section: Imaging and Analysis Techniquesmentioning

confidence: 99%

“…This may indicate an alignment with this incident direction, but it is more likely that no direction can be inferred for these particles. HVI holes with diameters less than 10 times the target thickness will be approximately circular and do not provide a measure of particle incident direction by this technique [Gardner et al, 1997].…”

Section: Particle Incident Directionsmentioning

confidence: 99%

See 2 more Smart Citations

Nanometer hypervelocity dust impacts in low Earth orbit

et al. 2007

View full text Add to dashboard Cite

[1] A study has been made of 60 nm thick aluminum films which have been exposed to the space environment outside of International Space Station (ISS) between 2002 and 2004. Field emission scanning electron microscopy has been used to provide high-resolution images of impact features less than 100 nm in diameter and of detailed impact morphologies at different spatial scales. Analysis of images reveals the incident directions and diameters of the impacting particles and allows separation of impacts at hypervelocity from those at lower velocities. This allows the separation of different particle populations. We find that most detected particles have been generated locally as the result of secondaries following larger impacts elsewhere on the ISS or as a result of docking maneuvers by the Progress supply module or by other spacecraft. There is also evidence for a population of dust particles incident at hypervelocity and with minimum diameters smaller than 10 nm. This particle flux of the dust particles is consistent with the expected flux of micrometeoroids with mass >10 À18 g at 1 AU and may represent the first measurement of dust particles with such small masses in near-Earth space. Future experiments to measure the flux of nanometer-scale dust particles are proposed, both passive exposure cells for retrieval and also active detectors to provide access to dust/debris populations without the requirement for experiment retrieval.

show abstract

Section: Imaging and Analysis Techniquessupporting

confidence: 81%

Section: Imaging and Analysis Techniquesmentioning

confidence: 99%

Section: Particle Incident Directionsmentioning

confidence: 99%

See 1 more Smart Citation

Nanometer hypervelocity dust impacts in low Earth orbit

et al. 2007

View full text Add to dashboard Cite

show abstract

“…Dust particles impacting on the film will have a ballistic limit defined as the maximum thickness of aluminium which can be perforated [50]. The limit is a function of both the mass and velocity of a particle and is derived from empirical formulae generated from laboratory impact data [26]. The Al films are supported by the interchannel walls of an microchannel plate (MCP) detector and are freestanding over the open area of the microchannels.…”

Section: Dust Telescope (Dt)mentioning

confidence: 99%

Sample return of interstellar matter (SARIM)

et al. 2008

View full text Add to dashboard Cite

show abstract

“…A 10-100 nm Al film determines a penetration threshold for particles [21,45]). The Al films are supported by the interchannel walls of a microchannel plate (MCP) detector and are freestanding over the open areas of the microchannels.…”

Section: The Aluminium Film Interplanetary Dust Detector (Afidd)mentioning

confidence: 99%

DuneXpress

et al. 2008

View full text Add to dashboard Cite

The DuneXpress observatory will characterize interstellar and interplanetary dust in-situ, in order to provide crucial information not achievable with remote sensing astronomical methods. Galactic interstellar dust constitutes the solid phase of matter from which stars and planetary systems form. Interplanetary dust, from comets and asteroids, represents remnant material from bodies at different stages of early solar system evolution. Thus, studies of interstellar and interplanetary dust with DuneXpress in Earth orbit will provide a comparison between the composition of the interstellar medium and primitive planetary objects. Hence DuneXpress will provide insights into the physical conditions during planetary system formation. This comparison of interstellar and interplanetary dust addresses directly themes of highest priority in astrophysics and solar system science, which are described in ESA's Cosmic Vision. The discoveries of interstellar dust in the outer and inner solar system during the last decade suggest an innovative approach to the characteriza-

show abstract

Hole growth characterisation for hypervelocity impacts in thin targets

Cited by 33 publications

References 3 publications

Nanometer hypervelocity dust impacts in low Earth orbit

Nanometer hypervelocity dust impacts in low Earth orbit

Sample return of interstellar matter (SARIM)

DuneXpress

Contact Info

Product

Resources

About