| 000 | 02798nlm1a2200469 4500 | ||
|---|---|---|---|
| 001 | 637795 | ||
| 005 | 20231030040221.0 | ||
| 035 | _a(RuTPU)RU\TPU\network\1975 | ||
| 090 | _a637795 | ||
| 100 | _a20141020a2005 k y0engy50 ba | ||
| 101 | 0 |
_aeng _deng |
|
| 102 | _aNL | ||
| 135 | _adrcn ---uucaa | ||
| 181 | 0 | _ai | |
| 182 | 0 | _ab | |
| 200 | 1 |
_aPossible application of carbon nanotubes to the field emission electron source for portable betatrons _fTakehiro Ohnishi [et al.] |
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| 203 |
_aText _celectronic |
||
| 300 | _aTitle screen | ||
| 330 | _aIn order to study the feasibility of a carbon nanotube-based electron gun for small and portable betatrons, the characteristics of electron emission from carbon nanotubes were measured at around ?1?10?4 Pa, a typical pressure in the vacuum chamber of such betatrons. The sample cathodes were made from powders of single-walled nanotube (SWNT) and multi-walled nanotube (MWNT) that were fixed on the stainless steel plate with gold paste. We found that the emission was weaker at the lower vacuum for both MWNT and SWNT. However, when the vacuum level was restored to ?1?10?4 Pa after being kept at 4.0?10?4 Pa for 15 minutes, the emission-current recovered to some extent but did not fully come back to the original value. The observed current densities from SWNT and MWNT are 550 and 540 ?A/mm2, respectively, at the high-voltage we tried: 2 kV for SWNT and 1.1 kV for MWNT across a 300 ?m gap. It is likely that the carbon nanotube, under the pulsed operation, has advantages over the thermal cathode for the electron emitters of portable betatrons. | ||
| 333 | _aРежим доступа: по договору с организацией-держателем ресурса | ||
| 461 |
_tNuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment _oScientific Journal |
||
| 463 |
_tVol. 539, iss. 1-2 _v[P. 16-24] _d2005 |
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| 610 | 1 | _aэлектронный ресурс | |
| 610 | 1 | _aтруды учёных ТПУ | |
| 610 | 1 | _aField emission | |
| 610 | 1 | _aElectron gun | |
| 610 | 1 | _aElectron source | |
| 610 | 1 | _aCarbon nanotube | |
| 610 | 1 | _aBetatron | |
| 701 | 0 | _aTakehiro Ohnishi | |
| 701 | 0 | _aIchita Endo | |
| 701 | 0 | _aKenji Hayashi | |
| 701 | 0 | _aAkitsugu Kohara | |
| 701 | 0 | _aTakuo Yoshida | |
| 701 | 1 |
_aChakhlov _bG. L. _gGennady Lukyanovich |
|
| 701 | 1 |
_aMalikov _bE. L. _cphysicist _cResearcher of Tomsk Polytechnic University _f1978- _gEvgeny Lvovich (L'vovich) _2stltpush _3(RuTPU)RU\TPU\pers\32863 |
|
| 701 | 1 |
_aNaydukov _bA. P. _gAleksey Petrovich |
|
| 701 | 0 | _aToshikazu Ekino | |
| 701 | 0 | _aFumitaka Nishiyama | |
| 801 | 2 |
_aRU _b63413507 _c20141111 _gRCR |
|
| 856 | 4 | _uhttp://www.sciencedirect.com/science/article/pii/S0168900204021898 | |
| 942 | _cCF | ||