Spectrometer Definition and 177 Threads

I managed to do part a) of the question but got stuck on b). Why use F=(mv^2)/r for circular motion? And even if I use this equation, how do I find r, the radius? Thank you PV

Homework Statement A visible light spectrometer has a grating of width D=10cm and a collimating lens of focal length L=1m. Show that the optimal width for the input slit is such that it will produce a diffraction pattern of width D. Homework Equations The diffraction pattern of a single...

Can anyone help with this problem, I have tried it a number of ways and can not get the correct answer, thanks in advance. Two isotopes of carbon, carbon-12 and carbon-13, have masses of 19.93 10-27 kg and 21.59 10-27 kg, respectively. These two isotopes are singly ionized (+e) and each is...

i have a micorwave bench that operates in the X band.I want to know if i can convert it to a microwave spectrometer, with little modification,i have a gunn power supply, at the source end of the bench and a dielectric sample holder at the otherend. if i replace the termination next to the...

Hi Guys, Sorry for dumping this thread in here, I really wouldn't know where this would fit... I'm a farmer in Australia and I'm trying out these really simple devices to measure nutrient levels in my soil, they're basically a ceramic container with a small hose that gets buried into the...

Spectrometer vernier scale. Quick answer please! This is a quick question. I am measuring the emission spectra for hydrogen, but now I'm finding myself wondering about measurements in the vernier scale. I have the right and left angle measurements; however they differ by more than 180 degrees...

Homework Statement A mass spectrometer is designed to separate protein fragments. The fragments are ionized by removing a single electron and then enter a 0.80 T uniform magnetic field at a speed of 2.3*10^5 m/s If a fragment has a mass that is 85 times the mass of the proton, what will be...

Homework Statement The problem can be found here; http://www.physics.uprm.edu/~mark/courses/FISI3172_I2007/PracticeExamIII.pdf Homework Equations Ok, ok. I made some reaserch, and I found that the; radius of an ion orbit on a mass spectrometer = mv / qB where m = mass, v =...

Okay. I have made a reasonably accurate spectrometer. Is there a formula that can predict the lines for a given element with a given atomic number. I have done research. The best that I found, is the formula for 'hydrogen-like' elements. So is there a formula to predict all spectral lines of any...

Homework Statement A singly charged positive ion has a mass of 2.50 x 10^-26kg. After being accelerated through a potential difference of 250 V, the ion enters a magnetic field of 0.500 T, in a direction perpendicular to the field. Homework Equations Calculate the radius of the path of...

Homework Statement Consider the mass spectrometer shown schematically in Figure 19.30 (don't have a scanner so I can't put the picture). The electric field between the plates of the velocity selector is 950 V/m, and the magnetic fields in both the velocity selector and the defelection chamber...

Homework Statement Consider the mass spectrometer shown schematically in Figure P19.30. The electric field between the plates of the velocity selector is 850 V/m, and the magnetic fields in both the velocity selector and the deflection chamber have magnitudes of 0.910 T. Calculate the radius...

Homework Statement Two isotopes of carbon, carbon-12 and carbon-13, have masses of 19.93x10^-27 kg and 21.59x10^-27 kg, respectively. These two isotopes are singly ionized (+e) and each is given a speed of 6.667x10^5 m/s. The ions then enter the bending region of a mass spectrometer where the...

I am a double major in EE and physics and I was thinking that a great senior project would be to design and build my own mass spectrometer. I would not only like to build the basic device, but also calibrate the device so that it provides the m/q value based on the radius of curvature caused by...

I am a double major in EE and physics and I was thinking that a great senior project would be to design and build my own mass spectrometer. I would not only like to build the basic device, but also calibrate the device so that it provides the m/q value based on the radius of curvature caused by...

Hi, I need to do an experiment to calculate Planck's constant from LEDs. Basically what I'm intending to do is a fairly simple variable dc supply->voltmeter->LED->spectrometer->diffraction grating->my eye type setup. I know how to do that, but the trouble is I'll need to track down a...

I'm designing my lab and so I want a spectrometer to investigate reaction kinetics eh. I am looking for a data logging spectrometer that can keep the reaction at constant temperature. My teacher is probably going to buy it. Does anyone know what company makes good spectrometers? About a...

The electric field between the plates of the velocity selector in a Bainbridege mass spectrometer is 20 V/m, and the magnectic field in both regions is 10 T(out and inside the spectrometer). A stream of singly charged selenium ions moves in a circular path with a radius of 1 m in the magnectic...

hey im looking for a conceptual question regarding the mass spectrometer, any concepts that are not usually mentioned in textbooks thanks !

[FONT="Comic Sans MS"]1.Some data obtained from the mass spectrum of a sample of carbon are given below. Ion 12C+ 13C+ Absolute mass of one ion/g 1.993 x 10-23 2.158 x 10-23 Relative abundance/ % 98.9 1.1 Use the data...

Hi, My Question: Suppose the electic field between the two electric plates in the mass spectrometer is 2.48 x 10^4 V/m and the magnetic fields B=B'=0.68 T. The source contains carbon isotopes of mass number 12,13,14 from a long dead piece of tree(To estimate atomic masses multiply by...

In the Plenary Session #1 of the Space Nuclear Conference 2005, Samuel C. C. Ting gave a presentation on the AMS-02, the second "Alpha Magnetic Spectrometer." The first, AMS-01, flew aboard the Space Shuttle during Mission STS-91. The AMS homepage is -...

Hey Everyone, I just got to my last homework question, and well I got a bit stuck. An ion source contains two isotopes of magnesium ( 24Mg, 25Mg). These ions travels undeflected through the velocity selector (B=0.850T, [E]=4.60x10^5V/m) of a mass spectrometer. If both isotopes are singly...

Can someone estimate how sensitive a spectrometer has to be in order to measure the velocity spectra of Io through a 0.7m focal length refractor telescope (radius 70mm) of during optimal conditions? :smile:

Suppose that an ion source in a mass spectrometer produces doubly ionized gold ions (Au2+), each with a mass of 3.27 x 10^-25 kg. The ions are accelerated from rest through a potential difference of 1.40 kV. Then, a 0.600 T magnetic field causes the ions to follow a circular path. Determine the...

Here are two chem questions that I can't figure them out...please give me some hints on solving them 1.) Ionic compounds( not simple molecular) can also be analyzed by mass spectrometer. Syggest how the sample can be vaporized. It can't be heating I think. 2.) Elements X and Y form a...

Given: A proton is accelerated up to KE before it exits into a magnetic field and is deflected. Question: What voltage battery is required accelerate the proton to that energy? So I use U = qV the question is.. what is Q.. is q the charge of the proton being accelerated through the...