New shift seen in cyclotrons - GoFuckYourself.com

Juicy D. Links · 07-02-2004, 04:25 PM

This is a interesting read got me thinking,

A subtle change in the motion of charged particles in magnetic fields has been discovered by physicists in the US. David Pritchard and colleagues at the Massachusetts Institute of Technology have shown that the resulting shift in the cyclotron frequency of the particle can be used to measure its quantum state (Nature 430 58). The effect could be used to measure the dipole moments of molecular ions, test fundamental symmetries, and weigh individual chemical bonds.

Quadrupole electrodes

Cyclotrons are routinely employed to compare the masses of molecules and study chemical reaction rates. The cyclotron frequency is given by the simple formula qB/m, where q and m are the charge and mass of the particle and B is the magnetic field. However, Pritchard and co-workers have discovered that this formula needs to be tweaked for particles that can be polarized. This happens because an electric dipole moment is induced in the particle and the two ends of the dipole move at slightly different speeds. The end result is that the cyclotron frequency is shifted by a small amount.

The MIT team found that this frequency shift was about 1 part in 109 for a CO+ ion. Moreover, since the polarizability of the ion depends on its internal quantum state, the cyclotron frequency changes whenever the ion jumps to a different internal state. By measuring these changes, Pritchard and co-workers were able to calculate the dipole moment of the molecule. They were also able to determine the quantum state of the molecule by simply measuring its cyclotron frequency.

"This is a very general effect that had not been recognized before, and it needs to be taken into account in various experiments," team member James Thompson told PhysicsWeb.

These include fundamental tests of CPT (charge-parity-time reversal) symmetry and experiments that use molecular ions to search for an electron dipole moment.

NickPapageorgio · 07-02-2004, 04:28 PM

I bet that has had people scratching their heads for years.

pornstar2pac · 07-02-2004, 04:29 PM

I was thinking the same thing

Jakke PNG · 07-02-2004, 04:31 PM

I thought Cyclotron was a character in Transformers.

fudpuck · 07-02-2004, 04:34 PM

Hmm.

NickPapageorgio · 07-02-2004, 04:35 PM

I mean for years there have probably been anomalies in controlled tests that noone could figure why right? Go figure...

Juicy D. Links · 07-02-2004, 04:36 PM

Quote:

Originally posted by NickPapageorgio
I mean for years there have probably been anomalies in controlled tests that noone could figure why right? Go figure...

good point

Big Cheese · 07-02-2004, 05:03 PM

I wrote that

MrIzzz · 07-02-2004, 05:04 PM

galleryseek · 07-02-2004, 05:09 PM

Ehhh that article is written by a washed up second class Princeton graduate.

First of all, the cyclotrons aren't subjective to the frequencies of dynamic dipoles. And second of all, the isotopical values are relative to the aligned positioning of the CO+ ion particles, which only further enforces the fact that cyclotrons stay static in nature.

OzMan · 07-02-2004, 05:49 PM

This is yet another spam thread for Juicy's new paysite....

http://www.cyclotronbabes.com

Marcus Aurelius · 07-02-2004, 06:15 PM

well shit..there goes my weekend.

07-02-2004, 04:25 PM	#1
Juicy D. Links So Fucking Banned Industry Role: Join Date: Apr 2001 Location: N.Y. -Long Island -- Posts: 122,992	New shift seen in cyclotrons This is a interesting read got me thinking, A subtle change in the motion of charged particles in magnetic fields has been discovered by physicists in the US. David Pritchard and colleagues at the Massachusetts Institute of Technology have shown that the resulting shift in the cyclotron frequency of the particle can be used to measure its quantum state (Nature 430 58). The effect could be used to measure the dipole moments of molecular ions, test fundamental symmetries, and weigh individual chemical bonds. Quadrupole electrodes Cyclotrons are routinely employed to compare the masses of molecules and study chemical reaction rates. The cyclotron frequency is given by the simple formula qB/m, where q and m are the charge and mass of the particle and B is the magnetic field. However, Pritchard and co-workers have discovered that this formula needs to be tweaked for particles that can be polarized. This happens because an electric dipole moment is induced in the particle and the two ends of the dipole move at slightly different speeds. The end result is that the cyclotron frequency is shifted by a small amount. The MIT team found that this frequency shift was about 1 part in 109 for a CO+ ion. Moreover, since the polarizability of the ion depends on its internal quantum state, the cyclotron frequency changes whenever the ion jumps to a different internal state. By measuring these changes, Pritchard and co-workers were able to calculate the dipole moment of the molecule. They were also able to determine the quantum state of the molecule by simply measuring its cyclotron frequency. "This is a very general effect that had not been recognized before, and it needs to be taken into account in various experiments," team member James Thompson told PhysicsWeb. These include fundamental tests of CPT (charge-parity-time reversal) symmetry and experiments that use molecular ions to search for an electron dipole moment.

07-02-2004, 04:28 PM	#2
NickPapageorgio Confirmed User Join Date: Apr 2004 Location: NC Posts: 8,323	I bet that has had people scratching their heads for years. __________________

07-02-2004, 04:29 PM	#3
pornstar2pac Omaha Hi/Lo Join Date: Nov 2003 Posts: 17,380	I was thinking the same thing __________________ Trump haters gonna hate. that's all they can do

07-02-2004, 04:31 PM	#4
Jakke PNG ex-TeenGodFather Industry Role: Join Date: Nov 2001 Location: Suomi Finland Perkele Posts: 20,306	I thought Cyclotron was a character in Transformers. __________________ ..and I'm off.

07-02-2004, 04:34 PM	#5
fudpuck Confirmed User Join Date: May 2004 Location: the woodwork Posts: 885	Hmm. __________________ AMK Hosting - 3.2Ghz, 1GB RAM, 2x300GB RAID1 + 10Mbps for $249mo. ICQ: 15898919 - Ask me about remote backups for your data.

07-02-2004, 04:35 PM	#6
NickPapageorgio Confirmed User Join Date: Apr 2004 Location: NC Posts: 8,323	I mean for years there have probably been anomalies in controlled tests that noone could figure why right? Go figure... __________________

07-02-2004, 05:03 PM	#8
Big Cheese Confirmed User Join Date: Jun 2004 Posts: 473	I wrote that

07-02-2004, 05:04 PM	#9
MrIzzz If u touch it, I will cum Join Date: Sep 2003 Location: long island Posts: 22,923	__________________ WHO WANTS TO PLAY GRAB-ASS?

07-02-2004, 05:09 PM	#10
galleryseek Confirmed User Industry Role: Join Date: Mar 2002 Posts: 8,234	Ehhh that article is written by a washed up second class Princeton graduate. First of all, the cyclotrons aren't subjective to the frequencies of dynamic dipoles. And second of all, the isotopical values are relative to the aligned positioning of the CO+ ion particles, which only further enforces the fact that cyclotrons stay static in nature.

07-02-2004, 05:49 PM	#11
OzMan Confirmed User Join Date: Sep 2003 Location: Los Begas Posts: 9,162	This is yet another spam thread for Juicy's new paysite.... http://www.cyclotronbabes.com

07-02-2004, 06:15 PM	#12
Marcus Aurelius No Refunds Issued. Industry Role: Join Date: Apr 2003 Posts: 14,809	well shit..there goes my weekend.