¿ªÔÆÌåÓý

ctrl + shift + ? for shortcuts
© 2025 Groups.io
"Cheap" vacuum
Hello... I need to make vacuum in range 5 to 10 mBar. What device to use for that. I need to evacuate aprox 5 litre box but I do not have electricity on place where I need to do that. What options I
By slavkok <eslavko@...> · #3596 ·
Ametek / Dycor M100 RGA Documentation
Esteemed list members: I have just acquired an Ametek / Dycor M100 RGA system (in 4 pieces from three different sellers) Does anyone have available the operation and service manuals to sell, copy, or
By David Speck · #3595 ·
Re: Vacuum Chamber for sale
4K OBO Vladimir
By Vladimir Chutko · #3594 ·
Re: Vacuum Chamber for sale
4K OBO
By Vladimir Chutko · #3593 ·
Re: Vacuum Chamber for sale
what is the price zafar To: VacuumX@... From: chutko@... Date: Thu, 5 May 2011 13:26:21 -0700 Subject: [VacuumX] Vacuum Chamber for sale Hi All, I am in urgent need to sale vacuum
By Zafar Iqbal · #3592 ·
Re: Vacuum Chamber for sale
How much is it? B
By Brian Whatcott · #3591 ·
Vacuum Chamber for sale
Hi All, I am in urgent need to sale vacuum chamber: Leybold A700, framed, with installed gate valve, LN2 trap, two-ways roughing valve, transformer for resistive evaporators, water and compressed air
By Vladimir Chutko · #3590 ·
Invitation to connect on LinkedIn
LinkedIn ------------ I'd like to add you to my professional network on LinkedIn. - Christian Christian Oertli Independent Research Professional United States Confirm that you know Christian Oertli
By Christian Oertli <chrisoe@...> · #3589 ·
Re: Diffusion pump pumping speed
Dear Attila Please send the patent to my e-mail: zafar1949@... Thanks Zafar To: VacuumX@... From: schneyolo@... Date: Fri, 22 Apr 2011 08:39:31 +0000 Subject: [VacuumX]
By Zafar Iqbal · #3588 ·
Diffusion pump pumping speed
Hi All, Because I didn't get reaction and I anyway searched a solution. I found a patent which is an improved diffusion pump description. It gives me answers to my question and gives ideas how to
By Attila <schneyolo@...> · #3587 ·
New file uploaded to VacuumX
Hello, This email message is a notification to let you know that a file has been uploaded to the Files area of the VacuumX group. File : /US3363830.pdf Uploaded by : schneyolo <schneyolo@...>
By VacuumX@... · #3586 ·
Diffusion pump pumping speed
Hi All, I have a question to diffusion pump, pumping speed. Is there any equation or math to calculate the pumping speed? Or what factors are important to determine the pumping speed. I ask this,
By Attila <schneyolo@...> · #3585 ·
Re: coating thickness error tolerance
The photographs are very informative and Baby George is beautiful Thanks Deepak
By deepak · #3584 ·
Re: coating thickness error tolerance
Agreed, there is a crystalline buildup over time of aluminum at the ends of the tungsten filament ,,, I am not at all sure what the thickness OUGHT to be. I found that when I used a lot more aluminum,
By Guy Brandenburg · #3583 ·
Re: coating thickness error tolerance
Pics of "baby George" are in the photos section under "Drew in sunny Florida". The door to my chamber swings sideways on a hinge. I put my mirrors on the door. The flow of metal gas in my chamber is
By Aurigema, Andrew N. (KSC-ESC-620)[QinetiQ North America - ESC] <andrew.n.aurigema@...> · #3582 ·
Re: coating thickness error tolerance
Guy, I don¡¯t think you can be accurate enough with volume calcs. There is loss to the emitter itself and there is tungsten mixture losses. I see a kind of crystalline build up near the ends of my
By Aurigema, Andrew N. (KSC-ESC-620)[QinetiQ North America - ESC] <andrew.n.aurigema@...> · #3581 ·
Re: coating thickness error tolerance
Thanks Vladimir, Andrew and Guy for making the technicalities clear and giving relevant usage data. Andrew, the term "sideways flow stationary emitter array" seems contradictory to me, do you have a
By deepak · #3580 ·
Re: coating thickness error tolerance
I am trying to figure out about depositing 140 nm on glass . Please recheck this for me. I rechecked my measurements, and my arithmetic, and it seems to me that I would need to evaporate 0.044 cm^3 of
By Guy Brandenburg · #3579 ·
Re: coating thickness error tolerance
From trial and error (not by calculation) I have found that a one-inch long piece of nearly-pure aluminum wire about 3-4 mm in diameter works best for us. (I'll recheck those measurements later) it's
By Guy Brandenburg · #3578 ·
Re: coating thickness error tolerance
I have a sideways flow stationary emitter array that seems to yield good results. I recently added a digital thickness indicator to my rig so now have actual numbers to put to the thickness. Using a
By Aurigema, Andrew N. (KSC-ESC-620)[QinetiQ North America - ESC] <andrew.n.aurigema@...> · #3577 ·