The Influence of an Air Exposure on the Secondary Electron Yield of Copper
Language: English
Published by Diplom.De Mai 2002, 2002
- Softcover
- New
Seller: buchversandmimpf2000, Emtmannsberg, BAYE, Germanybuchversandmimpf2000
AbeBooks seller since January 23, 2017
Condition: New
£ 32.78
Quantity: 1 available
Add to basketItem description from seller
This item is printed on demand - Print on Demand Titel. Neuware -Inhaltsangabe:Abstract:The influence of different air exposure times on the secondary electron emission of clean copper surfaces as well as on technical copper surfaces has been studied in the context of the phenomenon of multipacting, which can limit the performance of superconducting radio-frequency (RF) cavities for particle acceleration.The copper samples were prepared by heat treatments and in situ sputter-etching and they were investigated with a dedicated instrument for SEY measurements, by scanning electron microscopy (SEM), energy dispersive X-ray analysis (EDX), and by Auger electron spectroscopy (AES).After short air exposures of some seconds the maximum secondary electron yield dmax of clean copper is reduced from 1.3 to less than 1.2, due to the oxidation of the copper surface. Subsequent air exposure increases the secondary electron yield (SEY) until, after about 8 days exposure dmax is higher than 2.Clean copper samples were also exposed to the single gases present in air to find out the reasons for the dramatic increase of the SEY after long lasting air exposures. Only oxygen and water were found to affect secondary electron emission. An oxygen exposure decreases the SEY, while pure water exposure increases the SEY, but no single gas exposure changes dmax more than 0.2.Different methods have been tried in order to reduce the secondary electron yield of technical copper surfaces. For instance a 5 minutes air exposure of copper at 350 °C followed by a 350 °C bakeout reduces dmax to values close to unity.This procedure was applied to the outer, copper plated conductor of the LEP2 power couplers and its influence on pre-conditioning was tested. The results are promising but further tests are needed to confirm a beneficial effect of this treatment.Inhaltsverzeichnis:Table of Contents:Glossaryiv1.Introduction12.Basics32.1Secondary electron emission32.1.1The energy distribution of the emitted electrons32.1.2The secondary electron yield (SEY)42.1.3The SEY as a function of the primary electron energy42.1.4Influence of adsorbed layers of another species on the SEY52.1.5Influence of the work function on the SEY52.1.6Influence of the surface structure on the SEY52.2Air62.3Copper and copper oxidation72.4Vacuum basics92.4.1Kinetic theory of gases92.4.2The mean free path of a gas molecule92.4.3The monolayer time W92.4.4Gas flow regimes92.4.5Pumping speed S and throughput Q102.4.6Conductance [¿]Diplomica Verlag, Hermannstal 119k, 22119 Hamburg 76 pp. Englisch.…
Seller Inventory # 9783838654324
- Title
- The Influence of an Air Exposure on the Secondary Electron Yield of Copper
- Author
- Christian Scheuerlein
- Publisher
- Diplom.De Mai 2002
- Publication year
- 2002
- Condition
- Neu
- Binding
- Taschenbuch
- Language
- English
- ISBN 10
- 3838654323
- ISBN 13
- 9783838654324
- Item weight
- 124 grams
- Dimensions
- 210x148x6 mm
"Synopsis" may belong to another edition of this title.
Product Description
"About the title" may belong to another edition of this title.
buchversandmimpf2000
Emtmannsberg, BAYE, Germany
AbeBooks seller since January 23, 2017
Shipping rates from Germany to U.S.A.
| Item | 60 to 60 business days | 60 to 60 business days |
|---|---|---|
| First item | £ 50.25 | £ 62.81 |
Payment methods
- Check
- Paypal
Store description
Impressum Thorsten Retsch Buchversand Mimpf2000 Oberölschnitz 16 95517 Emtmannsberg Deutschland Telefon: 09209-2023188 Email: mimpf2000@online.de USt-ID-Nr.: DE 235096871 Wir führen gebrauchte Bücher aus allen Sparten der Literatur
Specialty
Modernes Antiquariat - Bücher von 1960 bis heuteSeller's business information
buchversandmimpf2000
Germany
Terms of sale
Impressum
Gesetzliche Anbieterkennung:
Thorsten Retsch
Buchversand Mimpf2000
Oberölschnitz 16
95517 Emtmannsberg
Deutschland
Telefon: 092092023188
E-Mail: order@buchversandmimpf2000.de
USt-IdNr.: DE 235096871
Alternative Streitbeilegung:
Die Europäische Kommission stellt eine Plattform für die außergerichtliche Online-Streitbeilegung (OS-Plattform) bereit, aufrufbar unter http://ec.europa.eu/odr.
Right of withdrawal
If you are a consumer you can withdraw from the contract in accordance with the following. Consumer means any natural person who is acting for purposes which are outside his trade, business, craft or profession.
Information regarding the right of withdrawal
Statutory right to withdraw
You have the right to withdraw from this contract within 14 days without giving any reason.
The withdrawal period will expire after 14 days from the day on which you acquire, or a third party other than the carrier and indicated by you acquires, physical possession of the last good or the last lot or piece.
To exercise the right of withdrawal, electronically fill in and submit a clear statement on our website, under "My Purchases" in "My Account". We will communicate to you an acknowledgement of receipt of such a withdrawal on a durable medium (e.g. by e-mail) without delay.
To meet the withdrawal deadline, it is sufficient for you to send your communication concerning your exercise of the right of withdrawal before the withdrawal period has expired.
Effects of withdrawal
If you withdraw from this contract, we will reimburse to you all payments received from you, including the costs of delivery (except for the supplementary costs arising if you chose a type of delivery other than the least expensive type of standard delivery offered by us).
We may make a deduction from the reimbursement for loss in value of any goods supplied, if the loss is the result of unnecessary handling by you.
We will make the reimbursement without undue delay, and not later than 14 days after the day on which we are informed about your decision to withdraw from this contract.
We will make the reimbursement using the same means of payment as you used for the initial transaction, unless you have expressly agreed otherwise; in any event, you will not incur any fees as a result of such reimbursement.
We may withhold reimbursement until we have received the goods back, or you have supplied evidence of having sent back the goods, whichever is the earliest.
You shall send back the goods or hand them over to buchversandmimpf2000, Emtmannsberg, BAYE, Germany, +49 09209-2023188, without undue delay and in any event not later than 14 days from the day on which you communicate your withdrawal from this contract to us. The deadline is met if you send back the goods before the period of 14 days has expired. You will have to bear the direct cost of returning the goods. You are only liable for any diminished value of the goods resulting from the handling other than what is necessary to establish the nature, characteristics and functioning of the goods.
Exceptions to the right of withdrawal
The right of withdrawal does not apply to:
- The delivery of newspapers, journals or magazines with the exception of subscription contracts; and
- The supply of digital content which is not supplied on a tangible medium (e.g. on a CD or DVD) if you accepted when you placed your order that we could start to deliver it, and that you could not withdraw once delivery had started.
Shipping terms
Soweit in der Artikelbeschreibung keine andere Frist angegeben ist, erfolgt die Lieferung der Ware innerhalb von 3-5 Werktagen nach Vertragsschluss, bei Vorauszahlung erst nach Eingang des vollständigen Kaufpreises und der Versandkosten. Alle Preise inkl. MwSt.