Attenuation Definition and 119 Threads

the mass attenuation coefficient is related to the maximum kinetic energy of the beta ray spectrum ( T max) by this equation mu subscribe m (symbol) = 1.7 / (1.14 T max) the problem here is that the denominator in my text is in the form of a matrix and as well all know a matrix doesn't give...

Exponential Attenuation and Beta Particle Range (solved) Homework Statement I am given a beta emitter and its atomic mass, as well as the atomic mass of its daughter, which have a difference of 0.0034 amu. I am to determine the range of the particles in air. Homework Equations I am given...

Hello everybody, actually yesterday i read about an experiment "ATTENUATION OF GAMMA RAYS". can anybody tell me what is meanning of word ATTENUATION.And why we are measuring it? i.e. what is the sigificance of measuring it?

Homework Statement Given... v\left(z,\,t\right)\,=\,5\,e^{-\alpha\,z}\,sin\left(4\pi\,\times\,10^9\,t\,-\,20\pi\,z\right) where z is distance (m), find... (a) Frequency (b) Wavelength (c) Phase Velocity (d) At z = 2m, the amplitude is 1 [V], Find the attenuation constant (\alpha)...

Hello everyone. I am trying to measure the position of a magnet moving inside a steel tube using a magnetic sensor on the outside. Eddy currents are causing errors due to phase shifts and amplitude changes. Any ideas? Can eddy currents be re-directed using selective copper paths? Since eddy...

Hallo to all, I have been reading a paper regarding electric pulse attenuation and the values are quoted in dB. The conversion to dB was done by multiplying the value with (20log10e) where "e" is the base of the natural logarithm. I see this conversion to dB fist time. I can not find any...

Homework Statement Show that the attenuation length, \Lambda, is just equal to the average distance a photon travels before being scattered or absorbed. Homework Equations my book gives: number of photons absorbed = \sigma\rho I(x) dx number of photons present after a thickness x...

Sound attenuation for my physics project I decided to investigate sound attenuation effect, for my equipment I’m using a speaker with a signal generator and at the other end a microphone with an oscilloscope...the sound generator and receiver were placed inside a tube which was well...

Sound attenuation for my physics project I decided to investigate sound attenuation effect, for my equipment I’m using a speaker with a signal generator and at the other end a microphone with an oscilloscope...the sound generator and receiver were placed inside a tube which was well...

I am looking at muons being lost as they travel through a concrete bunker (with various things inside). The minimum energy (mean) for a muon to go through the walls is about 1.82GeV, and for the stuff inside (flakes of magnesium) it is 2.7GeV. For a piece of heavy metal it is 0.13GeV (it's...

Homework Statement If a glass material has losses at 10^3 dB/km, what percentage of the original energy exists after moving 30m down the glass material. Homework Equations Intensity = Power / Area = (Energy / time ) / Area dB = 10 log (Output Intensity / Input Intensity )...

Hi, I am curious to know what is a typical numerical value for the attenuation coefficient of common optical fibre. Please don't include anything strange in the units like dB since I am new to that. Thanks.

\alpha =\frac {\omega \epsilon \prime \prime} {2} \sqrt {\mu \epsilon \prime} My question is what exactly does the \epsilon \prime \prime term signify?? I see sections of my notes that say \epsilon \prime \prime << \epsilon , but what is it? I mean when I am trying to find the attenuation...

Okay, the question I'm suppose to answer is: If the attenuation coefficent of Al is 1.73/cm for soft-xrays, what percentage of X-rays penetrate a piece of lead 3.00mm in thickness . . . What I seem to have is I = Io*e^(-ux) I believe u = 1.73/cm and x = 3.00mm. My 3...

Hi i am trying to understand how long a electromagnetic wave can travel... What is the attenuation that the electromagnetic wave face in the atmosphere... This question arised when i have read that marconni at the beginning of 20th century has sent electromagnetic waves from england to canadA...

I am going blank here... I have a high-pass 2nd order (butterworth) that has fc = 5500 kHz, fp = 7kHz and fs = 1kHz and asked for attenuation at fc and fp. I end up with more loss on passband than on stop band! I am actually not sure how to approach this. Any help is very very much...

Can anyone give me a good general formula or expanation for the diference in attenuation in a data signal in a network over a 500 and a 5000 foot cable? Help would be much appreciated. Thanx!

[FONT=Lucida Console]Hi everybody, I was wondering if somebody could help me find a chart or a table with electron attenuation lenghts or cross-sections in matter. I've searched the Internet inside-out but even if I would find something, it would be articles that you have to pay for :cry...

Hi, I'm using a software program called Maestro for an experiment on photon attenuation. We observed that different region of interets (ROI) gives different mass attenuation coefficients. Is there a way to determine the best ROI besides choosing it so that it's closest to the accepted coefficient?