Chadwick and the neutron. (1 Viewer)

[tommykins]

Skipping straight to how Chadwick found the neutron. My notes state -

Chadwick submitted his own paper, “Possible existence of a neutron.” Chadwick used neutrons as tools to bombard elements, and then observed the nature of any particle emissions. Careful measurements of the momentums and energies involved in these and other nuclear reactions confirmed the existence of neutrons. This experimental work dealt with the nature of uncharged radiation and was based on the conservation of momentum and energy law

That part seems abit contradictory considering he used neutrons to find the existence of a neutron ? :S

Clarification please, thanks in advance.

 

[Js^-1]

Maybe it's a typo.

Protons or maybe Nucleons? I can only find info that he bombarded elements with emissions from other elements. That would tend to point towards helium nuclei, no? I dunno.

 

[obimoshman1234]

ur notes have typo because HE FIRED ALPHA PARTICLES AT THE ELEMENTS then discovered neutron

 

[tommykins]

回复: Re: Chadwick and the neutron.

alright, thank you.

 

[duy.le]

ur notes have typo because HE FIRED ALPHA PARTICLES AT THE ELEMENTS then discovered neutron

im pretty sure it was a proton

 

[obimoshman1234]

no he didnt fire protons. IN his experiment what happened was the alpha particles displaced neutrons from the elements. he had set paraffin wax which was hit by the neutrons which displaced protons from the atoms in the wax. He used law energy and momentum conservation to work out neutrons stuff.

 

[undalay]

no he didnt fire protons. IN his experiment what happened was the alpha particles displaced neutrons from the elements. he had set paraffin wax which was hit by the neutrons which displaced protons from the atoms in the wax. He used law energy and momentum conservation to work out neutrons stuff.

This is correct. There's more to it though.

 

[obimoshman1234]

obviously i am just proving he is an idiot for thinking protons and as such i only put brief description

 

[duy.le]

obviously i am just proving he is an idiot for thinking protons and as such i only put brief description

oh sorry i must of been high when i made that post. ...

lol, just that i remember there was the proton at the end and forgot the alpha particle at the beginning.

 

[obimoshman1234]

lol no worries being high is probably better than being right anyway