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Paper Abstract and Keywords
Presentation 2022-12-09 12:05
Electron emission characteristics of LaB6 thermal and Schottky emission at lower than normal heating temperatures
Chotaro Kajita, Futo Okada, Takayuki Tanaka, Hidekazu Murata, Eiji Rokuta (Meijou Univ.) ED2022-64
Abstract (in Japanese) (See Japanese page) 
(in English) We have been developing a novel LaB6 electron gun operates under Schottky emission mode and satisfies the conditions such as (1) simultaneous attainment of high brightness and high beam current, (2) long lifetime, and (3) good stability of operation. In this paper, as a preliminary step, we have measured the works normally as a thermionic emission emitter even at lower operating temperatures. As a result, we have found that the work function is 2.94 eV at temperatures of above 1620K and 4.53 eV at temperatures of below 1620K. These results indicate that the longevity of LaB6 emitter at temperature of 1620 K becomes about 70 times than that of the emitter at normal operating temperature of 1800K.
Keyword (in Japanese) (See Japanese page) 
(in English) LaB6 / Thermoelectronic emission / Richardson Plot / Work function / / / /  
Reference Info. IEICE Tech. Rep., vol. 122, no. 298, ED2022-64, pp. 44-46, Dec. 2022.
Paper # ED2022-64 
Date of Issue 2022-12-01 (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 ED2022-64

Conference Information
Committee ED  
Conference Date 2022-12-08 - 2022-12-09 
Place (in Japanese) (See Japanese page) 
Place (in English) 12/8 Nagoya University, 12/9 WINC AICHI 
Topics (in Japanese) (See Japanese page) 
Topics (in English) Applications of electron and ion beam 
Paper Information
Registration To ED 
Conference Code 2022-12-ED 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) Electron emission characteristics of LaB6 thermal and Schottky emission at lower than normal heating temperatures 
Sub Title (in English)  
Keyword(1) LaB6  
Keyword(2) Thermoelectronic emission  
Keyword(3) Richardson Plot  
Keyword(4) Work function  
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Keyword(6)  
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1st Author's Name Chotaro Kajita  
1st Author's Affiliation Meijou University (Meijou Univ.)
2nd Author's Name Futo Okada  
2nd Author's Affiliation Meijou University (Meijou Univ.)
3rd Author's Name Takayuki Tanaka  
3rd Author's Affiliation Meijou University (Meijou Univ.)
4th Author's Name Hidekazu Murata  
4th Author's Affiliation Meijou University (Meijou Univ.)
5th Author's Name Eiji Rokuta  
5th Author's Affiliation Meijou University (Meijou Univ.)
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Speaker Author-1 
Date Time 2022-12-09 12:05:00 
Presentation Time 25 minutes 
Registration for ED 
Paper # ED2022-64 
Volume (vol) vol.122 
Number (no) no.298 
Page pp.44-46 
#Pages 3 
Date of Issue 2022-12-01 (ED) 

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