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Re: RF bipolars RIP

Newsgroups	sci.electronics.design
Subject	Re: RF bipolars RIP
References	<hf0sbcdr6q698nj4kf0o4afbch9i842oth@4ax.com> <e9e71fc8-f9ff-4195-a60d-7b71b62bfa61@googlegroups.com> <rd14pd-cpm.ln1@coop.radagast.org> <o9qrjr$ose$1@node1.news.atman.pl>
From	dplatt@coop.radagast.org (Dave Platt)
Date	2017-03-10 21:32 -0800
Message-ID	<foecpd-8l7.ln1@coop.radagast.org> (permalink)
Organization	Unlimited download news at news.astraweb.com

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>> Build a Farnsworth fusor, and chase after the neutrons until they
>> decay?  :-)
>
>Is its neutron flux dangerous (in the typical scale of the device)?

Most of the academic/hobbyist fusors seem to peak at a few thousand,
or a few tens of thousands of neutrons per second.  It looks to me as
if this would be a "significant but not immediately dangerous" level
of exposure for someone standing close to the fusor... some from
direct exposure to the neutrons, and some from beta/gamma radiation
due to neutron activation of the fusor body and the table and floor
and air and so forth.  Might be no worse for you than an equivalent
number of hours flying in a commercial airliner, where radiation from
cosmic-ray exposure is quite significant.

I saw one set of blog postings by a guy who claims to have achieved a
much higher rate of fusion and neutron production (several orders of
magnitude more; he was saying "100 milliwatts out, for 100 watts in")
and that he managed to inadvertently expose himself so badly that he
suffered symptoms of radiation poisoning (nausea and vomiting).

So... yeah, maybe.  It sounds as if it's possible to build something
efficient enough, that you'd have to take significant precautions with
shielding, distance, and choice of materials (to minimize neutron
activation) in order to be safe.

Thread

RF bipolars RIP John Larkin <jjlarkinxyxy@highlandtechnology.com> - 2017-03-06 16:51 -0800
  Re: RF bipolars RIP Winfield Hill <hill@rowland.harvard.edu> - 2017-03-06 18:01 -0800
    Re: RF bipolars RIP Gerhard Hoffmann <ghf@hoffmann-hochfrequenz.de> - 2017-03-07 03:19 +0100
      Re: RF bipolars RIP John Larkin <jjlarkinxyxy@highlandtechnology.com> - 2017-03-06 18:25 -0800
        Re: RF bipolars RIP George Herold <gherold@teachspin.com> - 2017-03-06 19:03 -0800
        Re: RF bipolars RIP Winfield Hill <hill@rowland.harvard.edu> - 2017-03-06 19:11 -0800
          Re: RF bipolars RIP John Larkin <jjlarkin@highlandtechnology.com> - 2017-03-06 20:40 -0800
        Re: RF bipolars RIP Joerg <news@analogconsultants.com> - 2017-03-07 07:28 -0800
      Re: RF bipolars RIP Winfield Hill <hill@rowland.harvard.edu> - 2017-03-06 18:31 -0800
        Re: RF bipolars RIP John Larkin <jjlarkin@highlandtechnology.com> - 2017-03-06 20:44 -0800
          Re: RF bipolars RIP Phil Hobbs <pcdhSpamMeSenseless@electrooptical.net> - 2017-03-07 10:17 -0500
            Re: RF bipolars RIP John Larkin <jjlarkin@highlandtechnology.com> - 2017-03-07 08:08 -0800
              Re: RF bipolars RIP Phil Hobbs <pcdhSpamMeSenseless@electrooptical.net> - 2017-03-07 12:15 -0500
                Re: RF bipolars RIP John Larkin <jjlarkin@highlandtechnology.com> - 2017-03-07 09:30 -0800
                Re: RF bipolars RIP Joerg <news@analogconsultants.com> - 2017-03-07 09:33 -0800
                Re: RF bipolars RIP Phil Hobbs <pcdhSpamMeSenseless@electrooptical.net> - 2017-03-07 12:44 -0500
                Re: RF bipolars RIP Cursitor Doom <curd@notformail.com> - 2017-03-07 17:53 +0000
                Re: RF bipolars RIP Joerg <news@analogconsultants.com> - 2017-03-07 10:59 -0800
                Re: RF bipolars RIP John Larkin <jjlarkinxyxy@highlandtechnology.com> - 2017-03-07 11:06 -0800
                Re: RF bipolars RIP Joerg <news@analogconsultants.com> - 2017-03-07 11:16 -0800
                Re: RF bipolars RIP "Tim Williams" <tiwill@seventransistorlabs.com> - 2017-03-07 15:11 -0600
                Re: RF bipolars RIP John Larkin <jjlarkinxyxy@highlandtechnology.com> - 2017-03-07 14:30 -0800
                Re: RF bipolars RIP George Herold <gherold@teachspin.com> - 2017-03-07 15:47 -0800
                Re: RF bipolars RIP George Herold <gherold@teachspin.com> - 2017-03-07 15:55 -0800
                Re: RF bipolars RIP Sjouke Burry <burrynulnulfour@ppllaanneett.nnll> - 2017-03-08 11:50 +0100
                Re: RF bipolars RIP John Larkin <jjlarkinxyxy@highlandtechnology.com> - 2017-03-07 16:36 -0800
                Re: RF bipolars RIP pcdhobbs@gmail.com - 2017-03-08 04:40 -0800
                Re: RF bipolars RIP George Herold <gherold@teachspin.com> - 2017-03-08 06:24 -0800
                Re: RF bipolars RIP dplatt@coop.radagast.org (Dave Platt) - 2017-03-07 16:55 -0800
                Re: RF bipolars RIP George Herold <gherold@teachspin.com> - 2017-03-08 06:40 -0800
                Re: RF bipolars RIP Piotr Wyderski <no@mail.com> - 2017-03-09 07:10 +0100
                Re: RF bipolars RIP dplatt@coop.radagast.org (Dave Platt) - 2017-03-10 21:32 -0800
                Re: RF bipolars RIP "Tim Williams" <tiwill@seventransistorlabs.com> - 2017-03-07 22:57 -0600
            Re: RF bipolars RIP, grab em while you can Winfield Hill <hill@rowland.harvard.edu> - 2017-03-09 04:05 -0800
              Re: RF bipolars RIP, grab em while you can pcdhobbs@gmail.com - 2017-03-09 04:44 -0800
          Re: RF bipolars RIP Cursitor Doom <curd@notformail.com> - 2017-03-07 17:50 +0000
            Re: RF bipolars RIP John Larkin <jjlarkinxyxy@highlandtechnology.com> - 2017-03-07 11:08 -0800
              Re: RF bipolars RIP John Larkin <jjlarkinxyxy@highlandtechnology.com> - 2017-03-07 11:09 -0800
                Re: RF bipolars RIP Phil Hobbs <pcdhSpamMeSenseless@electrooptical.net> - 2017-03-07 14:34 -0500
                Re: RF bipolars RIP Phil Hobbs <pcdhSpamMeSenseless@electrooptical.net> - 2017-03-07 15:40 -0500
                Re: RF bipolars RIP Cursitor Doom <curd@notformail.com> - 2017-03-07 20:41 +0000
                Re: RF bipolars RIP John Larkin <jjlarkinxyxy@highlandtechnology.com> - 2017-03-07 13:08 -0800
                Re: RF bipolars RIP "Tim Williams" <tiwill@seventransistorlabs.com> - 2017-03-07 15:14 -0600
                Re: RF bipolars RIP Phil Hobbs <pcdhSpamMeSenseless@electrooptical.net> - 2017-03-07 16:17 -0500
                Re: RF bipolars RIP "Tim Williams" <tiwill@seventransistorlabs.com> - 2017-03-07 23:09 -0600
                Re: RF bipolars RIP John Larkin <jjlarkin@highlandtechnology.com> - 2017-03-07 21:34 -0800
                Re: RF bipolars RIP "Tim Williams" <tiwill@seventransistorlabs.com> - 2017-03-08 14:24 -0600
                Re: RF bipolars RIP John Larkin <jjlarkinxyxy@highlandtechnology.com> - 2017-03-08 13:10 -0800
                Re: RF bipolars RIP "Michael A. Terrell" <mike.terrell@earthlink.net> - 2017-03-09 14:19 -0500
                Re: RF bipolars RIP Cursitor Doom <curd@notformail.com> - 2017-03-09 22:10 +0000
                Re: RF bipolars RIP Phil Hobbs <pcdhSpamMeSenseless@electrooptical.net> - 2017-03-10 11:50 -0500
                Re: RF bipolars RIP Cursitor Doom <curd@notformail.com> - 2017-03-10 17:27 +0000
                Re: RF bipolars RIP Phil Hobbs <pcdhSpamMeSenseless@electrooptical.net> - 2017-03-10 12:52 -0500
                Re: RF bipolars RIP Cursitor Doom <curd@notformail.com> - 2017-03-10 19:01 +0000
                Re: RF bipolars RIP Phil Hobbs <pcdhSpamMeSenseless@electrooptical.net> - 2017-03-10 15:19 -0500
                Re: RF bipolars RIP Cursitor Doom <curd@notformail.com> - 2017-03-10 21:42 +0000
                Re: RF bipolars RIP Phil Hobbs <pcdhSpamMeSenseless@electrooptical.net> - 2017-03-10 17:52 -0500
                Re: RF bipolars RIP Cursitor Doom <curd@notformail.com> - 2017-03-10 23:38 +0000
                Re: RF bipolars RIP pcdhobbs@gmail.com - 2017-03-10 17:38 -0800
                Re: RF bipolars RIP Cursitor Doom <curd@notformail.com> - 2017-03-11 10:23 +0000
                Re: RF bipolars RIP pcdhobbs@gmail.com - 2017-03-11 03:30 -0800
                Re: RF bipolars RIP Cursitor Doom <curd@notformail.com> - 2017-03-11 12:50 +0000
                Re: RF bipolars RIP Phil Hobbs <pcdhSpamMeSenseless@electrooptical.net> - 2017-03-11 10:49 -0500
                Re: RF bipolars RIP Cursitor Doom <curd@notformail.com> - 2017-03-11 15:55 +0000
                Re: RF bipolars RIP "tom" <tmiller11147@verizon.net> - 2017-03-11 11:45 -0500
                Re: RF bipolars RIP Phil Hobbs <pcdhSpamMeSenseless@electrooptical.net> - 2017-03-11 16:50 -0500
                Re: RF bipolars RIP John Larkin <jjlarkin@highlandtechnology.com> - 2017-03-11 08:58 -0800
                Re: RF bipolars RIP Phil Hobbs <pcdhSpamMeSenseless@electrooptical.net> - 2017-03-11 16:52 -0500
                Re: RF bipolars RIP George Herold <gherold@teachspin.com> - 2017-03-10 18:08 -0800
                Re: RF bipolars RIP John Larkin <jjlarkin@highlandtechnology.com> - 2017-03-11 07:47 -0800
                Re: RF bipolars RIP Cursitor Doom <curd@notformail.com> - 2017-03-11 15:56 +0000
                Re: RF bipolars RIP John Larkin <jjlarkin@highlandtechnology.com> - 2017-03-11 09:02 -0800
                Re: RF bipolars RIP "Michael A. Terrell" <mike.terrell@earthlink.net> - 2017-03-10 13:28 -0500
                Re: RF bipolars RIP pcdhobbs@gmail.com - 2017-03-08 04:35 -0800
                Re: RF bipolars RIP Joerg <news@analogconsultants.com> - 2017-03-07 14:05 -0800
                Re: RF bipolars RIP John Larkin <jjlarkinxyxy@highlandtechnology.com> - 2017-03-07 14:33 -0800
                Re: RF bipolars RIP George Herold <gherold@teachspin.com> - 2017-03-07 15:40 -0800
                Re: RF bipolars RIP John Larkin <jjlarkinxyxy@highlandtechnology.com> - 2017-03-07 16:44 -0800
                Re: RF bipolars RIP Mikko OH2HVJ <mikko.syrjalahti@nospam.fi> - 2017-03-08 10:19 +0200
                Re: RF bipolars RIP Winfield Hill <hill@rowland.harvard.edu> - 2017-03-08 04:30 -0800
                Re: RF bipolars RIP Mikko OH2HVJ <mikko.syrjalahti@nospam.fi> - 2017-03-08 15:38 +0200
    Re: RF bipolars RIP Robert Baer <robertbaer@localnet.com> - 2017-03-09 23:50 -0800
      Re: RF bipolars RIP pcdhobbs@gmail.com - 2017-03-10 05:39 -0800
      Re: RF bipolars RIP John Larkin <jjlarkin@highlandtechnology.com> - 2017-03-10 07:15 -0800
  Re: RF bipolars RIP "Kevin Aylward" <kevinRemovAT@kevinaylward.co.uk> - 2017-03-07 21:55 +0000
    Re: RF bipolars RIP Joerg <news@analogconsultants.com> - 2017-03-07 14:10 -0800
    Re: RF bipolars RIP John Larkin <jjlarkinxyxy@highlandtechnology.com> - 2017-03-07 14:43 -0800
  Re: RF bipolars RIP Tim Wescott <tim@seemywebsite.really> - 2017-03-10 23:54 -0600
    Re: RF bipolars RIP pcdhobbs@gmail.com - 2017-03-11 04:32 -0800
    Re: RF bipolars RIP John Larkin <jjlarkin@highlandtechnology.com> - 2017-03-11 07:54 -0800
      Re: RF bipolars RIP krw@notreal.com - 2017-03-11 11:15 -0500
        Re: RF bipolars RIP John Larkin <jjlarkin@highlandtechnology.com> - 2017-03-11 09:17 -0800
          Re: RF bipolars RIP "tom" <tmiller11147@verizon.net> - 2017-03-11 15:11 -0500
            Re: RF bipolars RIP John Larkin <jjlarkin@highlandtechnology.com> - 2017-03-11 14:22 -0800
              Re: RF bipolars RIP "tom" <tmiller11147@verizon.net> - 2017-03-11 21:11 -0500
          Re: RF bipolars RIP krw@notreal.com - 2017-03-11 21:04 -0500

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