Comparative Analysis of the Effect of Polystyrene Coating on the Field Emission Characteristic of Tungsten and Carbon Fiber Emitters

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68081723%3A_____%2F25%3A00642981" target="_blank" >RIV/68081723:_____/25:00642981 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/68081731:_____/25:00642981 RIV/00216305:26620/26:0200712

Výsledek na webu

<a href="https://jjp.yu.edu.jo/index.php/jjp/article/view/188" target="_blank" >https://jjp.yu.edu.jo/index.php/jjp/article/view/188</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.47011/18.3.8" target="_blank" >10.47011/18.3.8</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Comparative Analysis of the Effect of Polystyrene Coating on the Field Emission Characteristic of Tungsten and Carbon Fiber Emitters

Popis výsledku v původním jazyce

Achieving high initial emission currents at relatively low operating voltages is essential for field electron emission sources utilized in equipment reliant on focused electron beams. Coating these emitters with a dielectric layer has the potential to enlarge their effective emission region, thereby increasing the initial emission current value while simultaneously reducing the operating voltage. This study compares and contrasts the effects of a dielectric polystyrene coating on field electron emission characteristics, drawing on two investigations of polystyrene-coated emitters. The study provides a brief analysis of the field electron emission characteristics obtained from carbon fiber and tungsten emitters, both prepared using electrochemical etching and subsequently coated with polystyrene. Both studies are thoroughly reviewed and contextualized, emphasizing the advantageous attributes of this emitter type. The focus of the study lies in the current-voltage characteristic, Murphy-Good analysis plot, and field electron emission images obtained from both emitters, with particular attention to how the coating influences emissivity. The investigation into the emission characteristics of coated tungsten indicates a significant improvement over coated carbon fiber emitters, with performance enhanced several times.

Název v anglickém jazyce

Comparative Analysis of the Effect of Polystyrene Coating on the Field Emission Characteristic of Tungsten and Carbon Fiber Emitters

Popis výsledku anglicky

Achieving high initial emission currents at relatively low operating voltages is essential for field electron emission sources utilized in equipment reliant on focused electron beams. Coating these emitters with a dielectric layer has the potential to enlarge their effective emission region, thereby increasing the initial emission current value while simultaneously reducing the operating voltage. This study compares and contrasts the effects of a dielectric polystyrene coating on field electron emission characteristics, drawing on two investigations of polystyrene-coated emitters. The study provides a brief analysis of the field electron emission characteristics obtained from carbon fiber and tungsten emitters, both prepared using electrochemical etching and subsequently coated with polystyrene. Both studies are thoroughly reviewed and contextualized, emphasizing the advantageous attributes of this emitter type. The focus of the study lies in the current-voltage characteristic, Murphy-Good analysis plot, and field electron emission images obtained from both emitters, with particular attention to how the coating influences emissivity. The investigation into the emission characteristics of coated tungsten indicates a significant improvement over coated carbon fiber emitters, with performance enhanced several times.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

10302 - Condensed matter physics (including formerly solid state physics, supercond.)

Projekt

—

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2025

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

Jordan Journal of Physics

ISSN

1994-7607

e-ISSN

1994-7615

Svazek periodika

18

Číslo periodika v rámci svazku

3

Stát vydavatele periodika

JO - Jordánské hášimovské království

Počet stran výsledku

15

Strana od-do

349-363

Kód UT WoS článku

001593327500008

EID výsledku v databázi Scopus

2-s2.0-105021440627