In an avalanche , one electron ,starting at the cathode, multiplies to 1000 over a distance of 10 mm , the ionization :coefficient (a) is 0.56 ionizations /mm O 0.69 ionizations/mm O 0.2 ionizations/mm O 0.33 ionizations/mm O
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- Chapter 38, Problem 074 Consider a potential energy barrier like that of the figure but whose height Uo is 8.6 eV and whose thickness L is 0.63 nm. What is the energy of an incident electron whose transmission coefficient is 0.0013? Energy --Ee Electron 0 L Number UnitsAn owl has good night vision because its eyes can detect a light intensity as small as 5.0 x 10-13 W/m2. What is the minimum number of photons per second that an owl eye can detect if its pupil has a diameter of 8.5 mm and the light has a wavelength of 510 nm?Problem 1: Two non-thermal plasmas have the same electron temperature. The ion temperature is 300K. One is run in Argon, the other in Helium. Which of the two has the smaller potential drop in the sheath? Motivate your answer.
- Rose bengal is a chromophore used in biological staining that has an absorption maximum at 559.1 nm and several other shorter wavelength absorption bands in the ultraviolet and visible regions of the spectrum when dissolved in ethanol. What is the energy difference, in kilojoules per mole, between the absorption maximum at 559.1 nm and a band at 221.5 nm? E = kJ/molThe wavelength of the emitted photon from the hydrogen molecule H2 is 2.30 μm (micrometers) when the vibrational quantum number decreases by one. What is the effective "spring constant" for the H2 molecule in N/m ?What is the "zero point" energy (in eV) of the molecular vibration?The main equation we are using to measure the e/m ratio is: (e/m)=((2v)/(r2B2)) If the anode voltage V is increased by 4 times and the magnetic field was kept constant, the electron beam's deflection radius will be doubled. If we plot V as the y-axis and r2 as the x-axis the slope is equal to: A) (e/m)B2=slope B)(e/m)=slope C)(e/m) (B2/2)=slope