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Paper Abstract and Keywords
Presentation 2023-12-08 10:50
Estimation of brightness and Richardson constant of a Schottky emission electron source using experimental data and numerical simulation
Futo Okada, Mitsuki Ozawa, Hidekazu Murata, Takayuki Tanaka, Eiji Rokuta (Meijo Univ.) ED2023-50
Abstract (in Japanese) (See Japanese page) 
(in English) The average brightness is an important indicator of electron source performance but is usually difficult to measure in simple vacuum experimental equipment. To accurately obtain the average brightness, we supplement the experimental data with numerical data. The numerical simulation faithfully models the emission current and other experimental data of the experimental system. Using this method, we calculated the brightness of a LaB6 emitter with a radius of curvature of cathode tip of approximately 8.5 μm at an applied voltage of -1.8 kV and a cathode temperature of 1700 K, and the average brightness was obtained as 7.3 × 105 A/cm2 sr (reduced average brightness: 409 A/cm2 sr eV). Furthermore, the Richardson constant was 81 A/cm2 K2.
Keyword (in Japanese) (See Japanese page) 
(in English) LaB6 / Schottky emission / average brightness / reduced average brightness / Richardson constant / / /  
Reference Info. IEICE Tech. Rep., vol. 123, no. 297, ED2023-50, pp. 45-48, Dec. 2023.
Paper # ED2023-50 
Date of Issue 2023-11-30 (ED) 
ISSN Online edition: ISSN 2432-6380
Copyright
and
reproduction		 All rights are reserved and no part of this publication may be reproduced or transmitted in any form or by any means, electronic or mechanical, including photocopy, recording, or any information storage and retrieval system, without permission in writing from the publisher. Notwithstanding, instructors are permitted to photocopy isolated articles for noncommercial classroom use without fee. (License No.: 10GA0019/12GB0052/13GB0056/17GB0034/18GB0034)
Download PDF ED2023-50

Conference Information
Committee ED  
Conference Date 2023-12-07 - 2023-12-08 
Place (in Japanese) (See Japanese page) 
Place (in English) WINC AICHI 
Topics (in Japanese) (See Japanese page) 
Topics (in English) Applications of electron and ion beam 
Paper Information
Registration To ED 
Conference Code 2023-12-ED 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) Estimation of brightness and Richardson constant of a Schottky emission electron source using experimental data and numerical simulation 
Sub Title (in English)  
Keyword(1) LaB6  
Keyword(2) Schottky emission  
Keyword(3) average brightness  
Keyword(4) reduced average brightness  
Keyword(5) Richardson constant  
Keyword(6)  
Keyword(7)  
Keyword(8)  
1st Author's Name Futo Okada  
1st Author's Affiliation Meijo University (Meijo Univ.)
2nd Author's Name Mitsuki Ozawa  
2nd Author's Affiliation Meijo University (Meijo Univ.)
3rd Author's Name Hidekazu Murata  
3rd Author's Affiliation Meijo University (Meijo Univ.)
4th Author's Name Takayuki Tanaka  
4th Author's Affiliation Meijo University (Meijo Univ.)
5th Author's Name Eiji Rokuta  
5th Author's Affiliation Meijo University (Meijo Univ.)
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Speaker Author-1 
Date Time 2023-12-08 10:50:00 
Presentation Time 25 minutes 
Registration for ED 
Paper # ED2023-50 
Volume (vol) vol.123 
Number (no) no.297 
Page pp.45-48 
#Pages 4 
Date of Issue 2023-11-30 (ED) 

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