Carbon Nanotube Based Deuterium Ion Source for Improved Neutron Generators

2009 ◽  
Author(s):  
R. L. Fink ◽  
N. Jiang ◽  
L. Thuesen ◽  
K. N. Leung ◽  
A. J. Antolak ◽  
...  
Keyword(s):  
Carbon Nanotube ◽  
Ion Source ◽  
Neutron Generators

scholarly journals Field desorption ion source development for neutron generators

2008 ◽  
Vol 587 (1) ◽  
pp. 76-81 ◽  
Author(s):  
I. Solano ◽  
Birk Reichenbach ◽  
P.R. Schwoebel ◽  
D.L. Chichester ◽  
C.E. Holland ◽  
...  
Keyword(s):  
Ion Source ◽  
Field Desorption ◽  
Neutron Generators

scholarly journals A field evaporation deuterium ion source for neutron generators

2008 ◽  
Vol 103 (9) ◽  
pp. 094912 ◽  
Author(s):  
Birk Reichenbach ◽  
I. Solano ◽  
P. R. Schwoebel
Keyword(s):  
Ion Source ◽  
Field Evaporation ◽  
Neutron Generators

Field ionization characteristics of an ion source array for neutron generators

2013 ◽  
Vol 114 (17) ◽  
pp. 174906 ◽  
Author(s):  
B. Bargsten Johnson ◽  
P. R. Schwoebel ◽  
P. J. Resnick ◽  
C. E. Holland ◽  
K. L. Hertz ◽  
...  
Keyword(s):  
Ion Source ◽  
Field Ionization ◽  
Neutron Generators ◽  
Source Array

scholarly journals Field ion source development for neutron generators

2012 ◽  
Vol 663 (1) ◽  
pp. 64-74 ◽  
Author(s):  
B. Bargsten Johnson ◽  
P.R. Schwoebel ◽  
C.E. Holland ◽  
P.J. Resnick ◽  
K.L. Hertz ◽  
...  
Keyword(s):  
Ion Source ◽  
Neutron Generators

Field Emission Ion Source Using a Carbon Nanotube Array for Micro Time-of-Flight Mass Spectrometer

2011 ◽  
Vol 50 (6) ◽  
pp. 06GM04 ◽  
Author(s):  
Kyusung Han ◽  
Yuri Lee ◽  
Dohan Jun ◽  
Soonil Lee ◽  
Kwang Woo Jung ◽  
...  
Keyword(s):  
Carbon Nanotube ◽  
Field Emission ◽  
Mass Spectrometer ◽  
Time Of Flight ◽  
Ion Source ◽  
Nanotube Array ◽  
Carbon Nanotube Array ◽  
Flight Mass Spectrometer

scholarly journals Performance of a Low Energy Ion Source with Carbon Nanotube Electron Emitters under the Influence of Various Operating Gases

Nanomaterials ◽  
2020 ◽  
Vol 10 (2) ◽  
pp. 354 ◽  
Author(s):  
Huzhong Zhang ◽  
Detian Li ◽  
Peter Wurz ◽  
Adrian Etter ◽  
Yongjun Cheng ◽  
...  
Keyword(s):  
Carbon Nanotube ◽  
Ion Source ◽  
Low Energy ◽  
Ion Current ◽  
Electron Field Emission ◽  
Mass Spectrometers ◽  
Electron Field ◽  
Electron Emitters ◽  
Different Gases

Low energy ion measurements in the vicinity of a comet have provided us with important information about the planet’s evolution. The calibration of instruments for thermal ions in the laboratory plays a crucial role when analysing data from in-situ measurements in space. A new low energy ion source based on carbon nanotube electron emitters was developed for calibrating the ion-mode of mass spectrometers or other ion detectors. The electron field emission (FE) properties of carbon nanotubes (CNTs) for H2, He, Ar, O2, and CO2 gases were tested in the experiments. H2, He, Ar, and CO2 adsorbates could change the FE temporarily at pressures from10−6 Pa to10−4 Pa. The FE of CNT remains stable in Ar and increases in H2, but degrades in He, O2, and CO2. All gas adsorbates lead to temporary degradation after working for prolonged periods. The ion current of the ion source is measured by using a Faraday cup and the sensitivity is derived from this measurement. The ion currents for the different gases were around 10 pA (corresponding to 200 ions/cm3 s) and an energy of ~28 eV could be observed.

Sterilizing Properties of Carbon Nanotube Composites

2003 ◽  
Vol 785 ◽  
Author(s):  
Roger J. Narayan
Keyword(s):  
Carbon Nanotube ◽  
Ion Source ◽  
Bacterial Cells ◽  
Plan View ◽  
Nanotube Composites ◽  
High Resolution Tem ◽  
Nonequilibrium Conditions ◽  
Carbon Nanotube Composites ◽  
Nitrogen Bonds

ABSTRACTHydrogen-free carbon nanotube composites have been created that possess unusual free radical generation properties. These films have the ability to nonspecifically kill bacterial cells and can be used to sterilize a surface. These composites have been formed by simultaneous pulsed laser ablation of carbon and bombardment of nitrogen ions generated by a Kaufman ion source at high temperatures (600- 700°C). The results suggest the creation of a new form of carbon that is predominantly trigonally-coordinated, with small fractions of carbon-nitrogen bonds. TEM studies allow us to conclude that the material consists of sp2-bonded ribbons wrapped approximately +/-15° normal to the surface. Plan-view high resolution TEM specimens demonstrate layers with curvature similar to that seen in multiwalled nanotube structures. In addition, the interlayer order extends to approximately 15–30 nm. These novel structures result from the use of energetic ions, which create nonequilibrium conditions that alter the growth mode of graphitic planes. In vitro testing revealed significant antimicrobial activity against Staphylococcus aureus bacteria. Possible applications include use on the functional surfaces of dialysis equipment, scalpels, and other sterile equipment.

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