- #1

Drakkith

Staff Emeritus

Science Advisor

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## Homework Statement

I'm trying to find the velocity of positive ions in a deuterium plasma that is heated to 15keV.

## Homework Equations

I'm not sure of the correct ones to use. I've tried the following.

1 eV = 1.602176487(40)×10−19 J

Ke=1/2MV*2

## The Attempt at a Solution

I've found the mass of dueterium as about 3.3444 x 10*-27 Kg.

Converting 15keV to J gives me 24032.647305 x 10*-19 J.

Plugging this in to the kinetic energy formula doesn't work very well, as i get a V of less than 1. Am I not converting 15keV to the right amount of joules? I don't know if the temp in eV would convert directly to Joules.

Thanks!