Answered: The probability current density to the… | bartleby

Related questions

Question

The probability current density to the wave function (x, t) = 2 e-i4kx where k is
a constant is:

Expert Solution

Step by step

Solved in 3 steps with 3 images

SEE SOLUTION Check out a sample Q&A here

Blurred answer

Similar questions

Astronomy: The energy of an absorbed photon must be __________ the electron energy gap.
An SiO2 layer is formed on top of pure silicon. The Auger peak of silicon is at 91 eV. After oxidation, it is shifted to 78 eV. Therefore, pure and oxidized silicon are easily distinguishable. When the surface is oxidized, the silicon 91 eV peak intensity decreases because of attenuation by the silicon dioxide layer. After an SiO2 layer of thickness t is formed, the 91 eV Auger peak drops to 15% of its clean surface value. The angle of electron collection is 45o from the surface normal. If the mean free path is 0.5 nm for 91 eV electrons in silicon dioxide, what is the thickness t of the oxide coating
The induced electron flow in Situation A would be ___.The induced electron flow in SItuation B would be ____.
A power diode used in a cell phone tower power supply dissipating power during the conductionprocess requires its junction temperature on not to exceed 180 degrees C. The power diode data sheet givesconduction-state voltage drop of 1.8V and for the DO-4 diode case, the junction-to-case thermal resistance, R-theta , jcis 0.8 degrees C/W. The diode is mounted over a heat sink having thermal resistances, case-to-sink R-theta,cs = 0.3degrees C/W and sink-to-ambient R-theta, sa= 0.6degrees C/W. Calculate the maximum current that diode can withstand safely without overheating if theambient temperature is 30 degrees C. Calculate the difference of temperature from case to sink. If the design requires to limit the junction temperature to 150 degrees C, select a value of R-theta,sa for aheat sink which should be used.
A 10 monolayers thick layer of Ag is deposited on Mo. The intensity of electrons emitted by the Ag and Mo can be measured separately. The ratio IAg/IMoi =100 for the deposited film. The mean free path of the electrons is 0.6 nm and the thickness of one layer is 0.18 nm. After heating the sample, the Ag layer has agglomerated in islands that cover a fraction q of the surface. Between the islands the Mo is “visible”. The intensity ratio after agglomeration is IAg/IMof = 1. Calculate the sensitivity of the electron spectroscopy technique for Ag with respect to Mo. I.e. how many electrons are emitted from one layer of Ag atoms compared to one layer of Mo atoms. And use this to determine what fraction of the surface is covered by islands?
30