Physico-chemical behavior of carbon materials under high temperature and ion irradiation

Paulmier, Thierry; Balat‐Pichelin, Marianne; Quéau, D. Le; Berjoan, R.; Robert, Jean‐Francois

doi:10.1016/s0169-4332(01)00351-8

Cited by 47 publications

(27 citation statements)

References 23 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Additionally, ions impact electron sources during MS operation, thereby sputtering the electrode and decreasing its lifetime. CNTs are composed of carbon, which has a low sputter coefficient [14], making them robust field emitters for mass spectrometry. With so many benefits, it is not surprising that the number of CNT field emitter applications have increased in the last decade.…”

Section: Introductionmentioning

confidence: 99%

Chemical Ionization Mass Spectrometry Using Carbon Nanotube Field Emission Electron Sources

Radauscher

Keil

Wells

et al. 2015

J. Am. Soc. Mass Spectrom.

View full text Add to dashboard Cite

Abstract. A novel chemical ionization (CI) source has been developed based on a carbon nanotube (CNT) field emission electron source. The CNT-based electron source was evaluated and compared with a standard filament thermionic electron source in a commercial explosives trace detection desktop mass spectrometer. This work demonstrates the first reported use of a CNT-based ion source capable of collecting CI mass spectra. Both positive and negative modes were investigated. Spectra were collected for a standard mass spectrometer calibration compound, perfluorotributylamine (PFTBA), as well as trace explosives including trinitrotoluene (TNT), Research Department explosive (RDX), and pentaerythritol tetranitrate (PETN). The electrical characteristics, lifetime at operating pressure, and power requirements of the CNT-based electron source are reported. The CNT field emission electron sources demonstrated an average lifetime of 320 h when operated in constant emission mode under elevated CI pressures. The ability of the CNT field emission source to cycle on and off can provide enhanced lifetime and reduced power consumption without sacrificing performance and detection capabilities.

show abstract

Section: Introductionmentioning

confidence: 99%

Chemical Ionization Mass Spectrometry Using Carbon Nanotube Field Emission Electron Sources

Radauscher

Keil

Wells

et al. 2015

J. Am. Soc. Mass Spectrom.

View full text Add to dashboard Cite

show abstract

“…Total hemispherical emissivity ε ∩ (T) as a function of temperature T has been measured in the range 700-1600 • C using a direct method 41 with the MEDIASE set-up developed at PROMES-CNRS laboratory [42][43][44] under the Solar Facilities for Europe (SOLFACE) program (6th Framework Program-European Community). Although the temperature values reached by different parts of a TPS during the re-entry phase in Earth's atmosphere depends on the geometry of the spacecraft and on the specific re-entry trajectory, the chosen temperature range (700-1600 • C) to perform emissivity and catalycity measurements is relevant to describe the typical reentry conditions of a blunt-body winged re-entry vehicle (e.g.…”

Section: Emissivity Measurement Methodsmentioning

confidence: 99%

Emissivity and catalycity measurements on SiC-coated carbon fibre reinforced silicon carbide composite

Alfano

Scatteia

Cantoni

et al. 2009

Journal of the European Ceramic Society

View full text Add to dashboard Cite

“…Thus, the mass-losing rate from a particle surface 17) is expressed by Figure 4 shows the mass-losing rate profiles for temperature. As is shown later, sublimation effect for micro-order particles is found to start at around 3500K.…”

Section: Mass-losing Rate Of Particle Surfacementioning

confidence: 99%

Numerical Investigation of Spalled Particle Behavior Ejected from an Ablator Surface

Nozawa

Kihara

Abe

2010

AEROSPACE TECHNOLOGY JAPAN

View full text Add to dashboard Cite

During ablation experiments in an arc-heated facility, the presence of spalled particles has been observed upstream of a detached shock wave or a stagnation-point boundary layer. In the past experiments using spectroscopic measurement for nitrogen arc-jet, the CN violet band spectra owing to the spallation particles ejected from the ablator were observed upstream of the shock layer. Based on this fact, in this study, the flight path of a single spallation particle ejected into a nonequilibrium flow field is numerically analyzed and the particle properties are obtained. The simulation is carried out about a solid particle ejected vertically from the front surface of an ablator, including various initial speeds, sizes, and positions. Moreover, by classifying the obtained results, the particle behavior is carefully investigated and the possibility of a particle being observed upstream of a shock wave is discussed.

show abstract

Physico-chemical behavior of carbon materials under high temperature and ion irradiation

Cited by 47 publications

References 23 publications

Chemical Ionization Mass Spectrometry Using Carbon Nanotube Field Emission Electron Sources

Chemical Ionization Mass Spectrometry Using Carbon Nanotube Field Emission Electron Sources

Emissivity and catalycity measurements on SiC-coated carbon fibre reinforced silicon carbide composite

Numerical Investigation of Spalled Particle Behavior Ejected from an Ablator Surface

Contact Info

Product

Resources

About