Message: Re: Why must an unstable ion decay when at rest ? Not Logged In (login)
 Next-in-Thread Next-in-Thread
 Next-in-Forum Next-in-Forum

More Re: Why must an unstable ion decay when at rest ? 

Forum: Hadronic Processes
Re: Question Why must an unstable ion decay when at rest ? (Andrea Conti)
Re: None Re: Why must an unstable ion decay when at rest ? (michel maire)
Date: 03 Feb, 2015
From: Michael H. Kelsey <Michael H. Kelsey>

On Tue, 03 Feb 2015 09:44:29 GMT, michel maire wrote:
> On Tue, 03 Feb 2015 04:36:29 GMT, Andrea Conti wrote:
> > G4RadioactiveDecay has the method AtRestDoIt. Why must an unstable ion
> > decay at rest ? What is the relevance of being at rest for the
> > radioactive decay to take place ?
> 
> Please, try to produce and to show us few lines (with /tracking/verbose 2) demonstrating a radioactive
> decay in fly.

Hi, Michel! As I noted in my reply, the process is rest-discrete, so it has both methods. You're quite right that generally speaking, any produced ion will lose energy so fast that it gets stopped before it decays. But that's not true in principle.

Consider simulating something like TRIUMF's ISAC, which produces radioactive beams. In that case, some of the isotopes should have short enough lifetimes to decay in flight, and we _should_ be simulating that. Whether it actually works in G4, I haven't directly needed to test.

  -- Mike Kelsey

Inline Depth:
 1 1
 All All
Outline Depth:
 1 1
 2 2
 All All
Add message: (add)

1 None: Re: Why must an unstable ion decay when at rest ?   (michel maire - 04 Feb, 2015)
 Add Message Add Message
to: "Re: Why must an unstable ion decay when at rest ?"

 Subscribe Subscribe

This site runs SLAC HyperNews version 1.11-slac-98, derived from the original HyperNews


[ Geant 4 Home | Geant 4 HyperNews | Search | Request New Forum | Feedback ]