What is the mean free path (MFP)? How can you increase the MFP in a vacuum chamb
ID: 3280366 • Letter: W
Question
What is the mean free path (MFP)? How can you increase the MFP in a vacuum chamber? For metal deposition in an evaporation system, compare the distance between target and evaporation soure with the working MFP. Which one has the smaller dimension? 1 atmosphere = 760 mm Hg = 760 torr. What are the physical dimensions of impingement rate?
What is the mean free path (MFP)? How can you increase the MFP in a vacuum chamber? For metal deposition in an evaporation system, compare the distance between target and evaporation source with the working MFP. Which one has the smaller dimension? 1 atmosphere pressure : mm Hg- torr. What are the physical dimensions of impingement rate?Explanation / Answer
Multifactor Productivity is defined as the ratio of output goods and/or services produced to all the resources used as inputs.
Multifactor Productivity = Output / (Raw material + Labor + Electricity + Capital)
given
1 atmosphere pressure P = 760 mm
Hg =760 torr.
MFP for mean free path
area = R2
= collision cross section
mean free path = 1 / 4 n r2
r = 1.5 X 10-10 m
= 1 / 4 X 3.14 X (1.5 X 10-10 )2
= 1 / 28.26 X 10-20
= 0.035 X 10-20
= 3.5 X 10-18 m
P = 1 /
P = 1 / 3.5 X 10-18
P = 0.28 X 1018 Pa
Related Questions
drjack9650@gmail.com
Navigate
Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.