Negative hydrogen ion production in the hollow cathode Penning surface-plasma source


     Related Videos

     Related Hubpages

  •  Doc. Url:    Embed Code: 

  • IEEE  status
    (0) (0 Votes)
    Views: (2021)   Date: (Publication Date: Feb 1994)   Pages: ()
  • Author:  Belchenko  Yu. I. Kupriyanov  A. S. Budker Institute of Nuclear Physics  630090  Novosibirsk  Russia;  

  • Abstract:  Abstract A small hollow cathode Penning surface-plasma source (SPS) was developed and studied. The H- yield was proportional to the emission apertures area and increased over a wide range of discharge current. The H- yield, with an intensity of up to 0.95 A and an emission current density of up to 3.6 A/cm2, was obtained in a pulsed mode. With the discharge current of 20 A and a pulse duration of 60 s, an H- yield with current of 0.1 A was obtained. The H- emission current density had approximately the same value for various diameters (0.5-7 mm) and thicknesses (0.3-4.0 mm) of cylindrical emission holes, if the thickness of hole walls did not exceed the hole diameter. The H- yield extracted through the thick conical emission holes had a value 25% higher than that for a thin cylindrical hole with the same permeable diameter. Dependencies of the H- yield versus magnetic field and hydrogen feed were different from that of the standard Penning SPS. The optimal cesium coverage of the electrodes was stable for both high-current, long-pulse and low-current, dc source operation. Noticeable H- production was realized with a low-discharge voltage of 15 V. The heavy negative ions fraction was less than 1% of total negative ion yield for long-pulse operation. The yield of D- ions from deuterium discharge had a value 15% lower than that of H- ions from the hydrogen discharge. Most of the extracted H- ions are produced by conversion of fast and superthermal (E?1 eV) atoms on the cesiated surfaces of the emission hole cones or they are due to the resonant charge exchange of anode-produced H- ions in the volume adjacent to the emission apertures.

     Related Documents

         Related Groups

           Related Science News

             More on Sciencestage

               Answers

               News

                 Related on Youtube Results
          • Louis Vuitton Compact Zippy wallet!! MY POSITIVE AND NEGATIVE ON LOUIS VUITTON!!
            Louis Vuitton Compact Zippy wallet!! MY POSITIVE AND NEGATIVE ON LOUIS VUITTON!! Hi everyone, here are my thoughts on this Louis Vuitton Compact Zippy wallet. Not just the positive! Also, few ideas for LOUIS VUITTON company! Hope you enjo. Back with Louis Vuitton Reviews!!... From: Harriet Wilkins Views: 0 0 ratings Time: 01:29 More in News & Politics
          • REPULSION: NONE MORE NEGATIVE [Demo Album] (HQ - 5.1)
            REPULSION: NONE MORE NEGATIVE [Demo Album] (HQ - 5.1) Before they were Type O Negative, they we're going by the name "Repulsion". This was sent out as a demo of an album that would become "Slow, Deep and Hard". The name was changed from Repulsion... From: CONCERT MATRIX Views: 0 0 ratings Time: 59:22 More in Music
          • Negative A and Counterfeit tested on animals - Fuhrer Remix
            Negative A and Counterfeit tested on animals - Fuhrer Remix Negative A and Counterfeit tested on animals - Fuhrer Remix. From: NatHalze Views: 0 0 ratings Time: 04:15 More in Entertainment
          • THE COLOR PURPLE CONTROVERSY: NEGATIVE STEREOTYPES OF BLACK MEN(1986)
            THE COLOR PURPLE CONTROVERSY: NEGATIVE STEREOTYPES OF BLACK MEN(1986) Since its premiere in December 1985, THE COLOR PURPLE provoked constant controversy, debate, and appraisals of its effects on the image of Black people in this country. The film also incited... From: Hezakya Starr Views: 0 0 ratings Time: 03:37 More in News & Politics
          • Negative skill point glitch for NBA2k14 Xbox360 or PS3
            Negative skill point glitch for NBA2k14 Xbox360 or PS3 Download: http://bit.ly/1vMX8Fr Need help? Like sub and drop a comment with what you need and ill take care of it for you! tags: nba 2k14 vc glitch nba 2k14 vc glitch nba 2k14 vc glitch nba... From: E Lik Views: 0 0 ratings Time: 01:54 More in Gaming
          • Negative skill point glitch for NBA2k14 Xbox360 or PS3
            Negative skill point glitch for NBA2k14 Xbox360 or PS3 Download: http://bit.ly/1vMX8Fr Need help? Like sub and drop a comment with what you need and ill take care of it for you! tags: nba 2k14 vc glitch nba 2k14 vc glitch nba 2k14 vc glitch nba... From: E Lik Views: 0 0 ratings Time: 01:54 More in Gaming
          • The History Of Negative Klasky Csupo
            The History Of Negative Klasky Csupo From: Jamie Shaffer Views: 5 0 ratings Time: 01:42 More in People & Blogs
          • RANDOMNESS (negative effect)
            RANDOMNESS (negative effect) From: Marcus Meek Views: 0 0 ratings Time: 00:45 More in People & Blogs
          • Gta 5 online DNS servers negative xps
            Gta 5 online DNS servers negative xps GTA 5 Online Unlimited Money / Hack / DNS Server/ RP / Anti Ban patch 1.16 Download from US Server : http://goo.gl/07jlFA Download from EU Server : http://public.justcloud.com/dvcfzgod6d.69382557... From: Ravil Almin Views: 0 0 ratings Time: 01:44 More in Gaming
          • Spanish verb SER - Negative sentences (01590)
            Spanish verb SER - Negative sentences (01590) Study and learn Spanish online. In this unit you will learn how to build negative sentences with the verb SER. http://www.enne.net. From: ENNE Views: 0 0 ratings Time: 07:25 More in Education
          • My Negative Louis Vuitton Speedy 30 Review
            My Negative Louis Vuitton Speedy 30 Review I love LV, but Speedy is just not my fave :( I totally botched the name of the one I was talking about with the strap. It is called the Bandouliere! More video: Have more exciting, the latest... From: Harriet Wilkins Views: 0 0 ratings Time: 02:50 More in News & Politics
          • Quality 8 - Navigate Around Negative People (11) - 14 Qualities of Successful Music Business Pros
            Quality 8 - Navigate Around Negative People (11) - 14 Qualities of Successful Music Business Pros David Hooper http://www.musicianbook.com https://www.facebook.com/MUSICMARKETING. From: musicstartshere Views: 1 0 ratings Time: 02:05 More in Music
          • (Negative) My cousins!!
            (Negative) My cousins!! Its my uncle counsins me andnana and ollie. From: cory Jordan Views: 0 0 ratings Time: 03:37 More in People & Blogs
          • Persuasive Speech (Negative)
            Persuasive Speech (Negative) COMM 1315 Should the United States restrict immigration? From: Elohi Gonzales Views: 1 0 ratings Time: 06:24 More in People & Blogs
          • Does Negative Credit Fall Off Your Credit Within Seven Years?
            Does Negative Credit Fall Off Your Credit Within Seven Years? From: Children by Age Views: 0 0 ratings Time: 01:28 More in Howto & Style
          • Obento Supreme Course Book GRAMMAR POINT - Plain Negative Verb Form
            Obento Supreme Course Book GRAMMAR POINT - Plain Negative Verb Form This tutorial explains how to make the casual (informal) negative form of verbs. For example, "Don't do/go/eat etc". This is particularly useful for everyday conversation with friends/family/people... From: Japanese Tutorials Views: 9 0 ratings Time: 04:54 More in Education
          • Positive Versus Negative Energy (Parody)
            Positive Versus Negative Energy (Parody) Decided to do somewhat of a parody of an earlier video where I discussed an opinion of mine about positive and negative energy. http://www.shop.com/ap28/home+260.xhtml. From: Andrew Patenaude Views: 0 0 ratings Time: 07:50 More in People & Blogs
          • FLUSH NEGATIVE COMMENTS
            FLUSH NEGATIVE COMMENTS Calling my business a scam…? FLUSH! You don't know what you don't know!~ From: Terri Johnson Views: 0 0 ratings Time: 03:03 More in Film & Animation
          • Adding and Subtracting Negative Numbers
            Adding and Subtracting Negative Numbers Created using PowToon -- Free sign up at http://www.powtoon.com/ . Make your own animated videos and animated presentations for free. PowToon is a free tool that allows you to develop... From: MrTwizzleSwizzle Views: 0 0 ratings Time: 01:48 More in Film & Animation
          • Nails & How To Spot Negative People | ChicLeTrill
            Nails & How To Spot Negative People | ChicLeTrill 10 Ways To Spot A Negative Person and why you should leave them alone. From: ChicLeTrill Views: 0 0 ratings Time: 10:10 More in Entertainment
          • Speech #3 Persuasive (negative)
            Speech #3 Persuasive (negative) Homework. From: Bryanbq14 Views: 2 0 ratings Time: 02:39 More in People & Blogs
          • Report Knee MRI negative for DeMarcus Cousins says he's fine
            Report Knee MRI negative for DeMarcus Cousins says he's fine Report Knee MRI negative for DeMarcus Cousins says he's fine Report Knee MRI negative for DeMarcus Cousins says he's fine. From: Todays Update Views: 0 0 ratings Time: 01:01 More in Sports
          • Rebuild 2 #3 "Negative City!"
            Rebuild 2 #3 "Negative City!" From: Two Negatives Views: 1 0 ratings Time: 11:30 More in Gaming
          • Madden NFL 15 - Positive & Negative On This Play In The Red Zone
            Madden NFL 15 - Positive & Negative On This Play In The Red Zone Playlist - https://www.youtube.com/watch?v=zK54ftJoeS0&list=PLiz7DZKzCbmOQ_zyB0EeeyBfhBT26-Fzi PrimeTime Sports - https://www.youtube.com/channel/UCW5BDObOOaPiXRE94pNT4Bw Follow me on twitter... From: HOLLYWOOD SPORTS Views: 31 0 ratings Time: 05:37 More in Gaming
          • My dads house not in negative
            My dads house not in negative From: Aidan RILEY Views: 0 0 ratings Time: 03:34 More in People & Blogs

          •      Related on Wikipedia




























             

            Powered free by PHPmotion