You want to completely resolve two atomic lines at 345.15 and 345.20 nm. You have a...
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You want to completely resolve two atomic lines at 345.15 and 345.20 nm. You have a grating monochromator with a reciprocal linear dispersion of 1.25 nm/mm and a grating with 2400 grooves/mm. What slit width do you need?
(a) 20 m (b) 10 m (c) 40 m (d) 60 m
Homework Answers
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You want to completely resolve two atomic lines at 345.15 and
345.20 nm. You have a...
What is the resolution of this spectrometer if two adjacent peaks at 378.1 nm and 377.6...
What is the resolution of this spectrometer if two adjacent peaks at 378.1 nm and 377.6 nm are fully separated? If they are spread on the focal plane over a distance by 1.7 mm, calculate the linear dispersion and the reciprocal linear dispersion. If the focal distance of this monochromator is 0.75 m and the slit width is 0.100 mm what is the effective bandwidth for this monochromator?
3. (20 points) A monochromator is a popular choice of wavelength selector in optical instruments. Answer...
3. (20 points) A monochromator is a popular choice of wavelength selector in optical instruments. Answer the following question regarding a monochromator that has a focal length of 0.78 m and a grating of 2500 lines/mm. (a) (b) Draw a schematic diagram to show key elements in any monochromator, including slits, reflectors and grating. Describe briefly how each element affects the resolution in wavelength at the output of monochromator. Calculate the reciprocal linear dispersion (D-1) of the monochromator for the...
I JUST NEED #4. I’m supplying my answer for #3 as it is needed. 3. You...
I
JUST NEED #4. I’m supplying my answer for #3 as it is needed.
3. You have access to two diffraction gratins, on with 600 groves/mm and a length of 50 mm and one with 1,200 grooves/mm and a length of 25 mm. Calculate the linear dispersion and resolving power for both. You also plan to use the first-order diffracted beam and use a configuration where B is around 10 degrees and the focal length of the system is 0.3...
The atomic emission spectrum of a light source is analyzed with a diffraction grating. A thick...
The atomic emission spectrum of a light source is analyzed with a diffraction grating. A thick line near 589.0 nm is observed. In order to resolve the thick line into two fine lines in first order, you replace with a 2.450 cm long diffraction grating, and you barely observed two distinct first order spectral lines at 589.0 and 589.6 nm on a screen 5.000 m away. a. What is the resolving power of the grating? b. What is the slit...
Two of the lines of the atomic hydrogen spectrum have wavelengths of 656?nm and 410?nm. If...
Two of the lines of the atomic hydrogen spectrum have wavelengths of 656?nm and 410?nm. If these fall at normal incidence on a grating with 8200 slits/cm,what will be the angular separation of the two wavelengths in the first-order spectrum?
2. You have a diffraction grating with 2500 lines/cm. You also have a light source that...
2. You have a diffraction grating with 2500 lines/cm. You also have a light source that emits light at 2 different wavelengths, 540 nm and 690 nm, at the same time. The screen for your experiment is 1.2 meters from the diffraction grating. A. What is the line spacing for the grating? B. What is the difference in the angle of the 2nd bright fringe for each wavelength for this grating? C. Which wavelength is closer to the center of...
Suppose that you have a reflection diffraction grating with n= 140 lines per millimeter. Light from...
Suppose that you have a reflection diffraction grating with n= 140 lines per millimeter. Light from a sodium lamp passes through the grating and is diffracted onto a distant screen. a. Two visible lines in the sodium spectrum have wavelengths 498 nm and 569 nm. What is the angular separation Δθ of the first maxima of these spectral lines generated by this diffraction grating? answer is 57 degrees b. How wide does this grating need to be to allow you...
Suppose that you have a reflection diffraction grating with n= 140 lines per millimeter. Light from...
Suppose that you have a reflection diffraction grating with n= 140 lines per millimeter. Light from a sodium lamp passes through the grating and is diffracted onto a distant screen. A. Two visible lines in the sodium spectrum have wavelengths 498 nm and 569 nm. What is the angular separation Δθ of the first maxima of these spectral lines generated by this diffraction grating? B. How wide does this grating need to be to allow you to resolve the two...
Prelab Name Class Section 1) You have a grating with 500 lines per mm. You shine...
Prelab Name Class Section 1) You have a grating with 500 lines per mm. You shine a 650 nm (red) laser on it. How many diffraction maxima do you expect to see? Show your calculation. 2) What is the angle for the last diffraction maximum? Show your calculation. 3) You now shine a 405 nm (blue) laser on the same grating. How many diffraction maxima do you expect to see? Show your calculation. 4) What is the angle for the...
You have a laser and want to estimate the wavelength. You decide to use a reflective diffraction ...
You have a laser and want to estimate the wavelength. You decide to use a reflective diffraction grating to do this. The light is incident on the grating at 20 degrees with respect to normal. Using a grating with a groove distance of 5 mm, the first-order diffraction, is found at an angle of-12.5 degrees. Determine the wavelength of the source.
What is the resolution of this spectrometer if two adjacent peaks at 378.1 nm and 377.6 nm are fully separated? If they are spread on the focal plane over a distance by 1.7 mm, calculate the linear dispersion and the reciprocal linear dispersion. If the focal distance of this monochromator is 0.75 m and the slit width is 0.100 mm what is the effective bandwidth for this monochromator?
3. (20 points) A monochromator is a popular choice of wavelength selector in optical instruments. Answer the following question regarding a monochromator that has a focal length of 0.78 m and a grating of 2500 lines/mm. (a) (b) Draw a schematic diagram to show key elements in any monochromator, including slits, reflectors and grating. Describe briefly how each element affects the resolution in wavelength at the output of monochromator. Calculate the reciprocal linear dispersion (D-1) of the monochromator for the...
I
JUST NEED #4. I’m supplying my answer for #3 as it is needed.
3. You have access to two diffraction gratins, on with 600 groves/mm and a length of 50 mm and one with 1,200 grooves/mm and a length of 25 mm. Calculate the linear dispersion and resolving power for both. You also plan to use the first-order diffracted beam and use a configuration where B is around 10 degrees and the focal length of the system is 0.3...
The atomic emission spectrum of a light source is analyzed with a diffraction grating. A thick line near 589.0 nm is observed. In order to resolve the thick line into two fine lines in first order, you replace with a 2.450 cm long diffraction grating, and you barely observed two distinct first order spectral lines at 589.0 and 589.6 nm on a screen 5.000 m away. a. What is the resolving power of the grating? b. What is the slit...
Prelab Name Class Section 1) You have a grating with 500 lines per mm. You shine a 650 nm (red) laser on it. How many diffraction maxima do you expect to see? Show your calculation. 2) What is the angle for the last diffraction maximum? Show your calculation. 3) You now shine a 405 nm (blue) laser on the same grating. How many diffraction maxima do you expect to see? Show your calculation. 4) What is the angle for the...
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