Z-Pinch Renaissance

Point out news stories, on the net or in mainstream media, related to polywell fusion.

Moderators: tonybarry, MSimon

Giorgio
Posts: 2728
Joined: Wed Oct 07, 2009 6:15 pm
Location: China, Italy
[phpBB Debug] PHP Warning: in file [ROOT]/vendor/twig/twig/lib/Twig/Extension/Core.php on line 1236: count(): Parameter must be an array or an object that implements Countable

Re: Z-Pinch Renaissance

Postby Giorgio » Tue Oct 15, 2019 8:48 am

A society of dogmas is a dead society.

Giorgio
Posts: 2728
Joined: Wed Oct 07, 2009 6:15 pm
Location: China, Italy
[phpBB Debug] PHP Warning: in file [ROOT]/vendor/twig/twig/lib/Twig/Extension/Core.php on line 1236: count(): Parameter must be an array or an object that implements Countable

Re: Z-Pinch Renaissance

Postby Giorgio » Tue Oct 15, 2019 9:08 am

A society of dogmas is a dead society.

Skipjack
Posts: 6051
Joined: Sun Sep 28, 2008 2:29 pm
[phpBB Debug] PHP Warning: in file [ROOT]/vendor/twig/twig/lib/Twig/Extension/Core.php on line 1236: count(): Parameter must be an array or an object that implements Countable

Re: Z-Pinch Renaissance

Postby Skipjack » Tue Oct 15, 2019 1:48 pm


Giorgio
Posts: 2728
Joined: Wed Oct 07, 2009 6:15 pm
Location: China, Italy
[phpBB Debug] PHP Warning: in file [ROOT]/vendor/twig/twig/lib/Twig/Extension/Core.php on line 1236: count(): Parameter must be an array or an object that implements Countable

Re: Z-Pinch Renaissance

Postby Giorgio » Tue Oct 15, 2019 2:27 pm

Indeed, but they don't seem to care about the differences there, they tend to generalize all the issues too much for my taste.

.
A society of dogmas is a dead society.

Skipjack
Posts: 6051
Joined: Sun Sep 28, 2008 2:29 pm
[phpBB Debug] PHP Warning: in file [ROOT]/vendor/twig/twig/lib/Twig/Extension/Core.php on line 1236: count(): Parameter must be an array or an object that implements Countable

Re: Z-Pinch Renaissance

Postby Skipjack » Tue Oct 15, 2019 3:30 pm


Skipjack
Posts: 6051
Joined: Sun Sep 28, 2008 2:29 pm
[phpBB Debug] PHP Warning: in file [ROOT]/vendor/twig/twig/lib/Twig/Extension/Core.php on line 1236: count(): Parameter must be an array or an object that implements Countable

Re: Z-Pinch Renaissance

Postby Skipjack » Tue Oct 15, 2019 9:17 pm

Just noticed that GG made a mistake in his calculations. He assumed a neutron yield per second. I am pretty sure that they are talking about a neutron yield per shot. One of their shots lasts a few nanoseconds...

Giorgio
Posts: 2728
Joined: Wed Oct 07, 2009 6:15 pm
Location: China, Italy
[phpBB Debug] PHP Warning: in file [ROOT]/vendor/twig/twig/lib/Twig/Extension/Core.php on line 1236: count(): Parameter must be an array or an object that implements Countable

Re: Z-Pinch Renaissance

Postby Giorgio » Wed Oct 16, 2019 1:53 am

A society of dogmas is a dead society.

williatw
Posts: 1862
Joined: Mon Oct 12, 2009 7:15 pm
Location: Ohio
[phpBB Debug] PHP Warning: in file [ROOT]/vendor/twig/twig/lib/Twig/Extension/Core.php on line 1236: count(): Parameter must be an array or an object that implements Countable

Re: Z-Pinch Renaissance

Postby williatw » Wed Oct 16, 2019 10:21 am


Skipjack
Posts: 6051
Joined: Sun Sep 28, 2008 2:29 pm
[phpBB Debug] PHP Warning: in file [ROOT]/vendor/twig/twig/lib/Twig/Extension/Core.php on line 1236: count(): Parameter must be an array or an object that implements Countable

Re: Z-Pinch Renaissance

Postby Skipjack » Wed Oct 16, 2019 11:56 am

Last edited by Skipjack on Wed Oct 16, 2019 2:30 pm, edited 1 time in total.

Giorgio
Posts: 2728
Joined: Wed Oct 07, 2009 6:15 pm
Location: China, Italy
[phpBB Debug] PHP Warning: in file [ROOT]/vendor/twig/twig/lib/Twig/Extension/Core.php on line 1236: count(): Parameter must be an array or an object that implements Countable

Re: Z-Pinch Renaissance

Postby Giorgio » Wed Oct 16, 2019 2:23 pm

A society of dogmas is a dead society.

williatw
Posts: 1862
Joined: Mon Oct 12, 2009 7:15 pm
Location: Ohio
[phpBB Debug] PHP Warning: in file [ROOT]/vendor/twig/twig/lib/Twig/Extension/Core.php on line 1236: count(): Parameter must be an array or an object that implements Countable

Re: Z-Pinch Renaissance

Postby williatw » Wed Oct 16, 2019 2:32 pm


paperburn1
Posts: 2457
Joined: Fri Jun 19, 2009 5:53 am
Location: Third rock from the sun.
[phpBB Debug] PHP Warning: in file [ROOT]/vendor/twig/twig/lib/Twig/Extension/Core.php on line 1236: count(): Parameter must be an array or an object that implements Countable

Re: Z-Pinch Renaissance

Postby paperburn1 » Wed Oct 16, 2019 3:08 pm

Pardon the platitude but
I think we need t dance with the girl we brought to the dance.
He3 is not available or a ready source available.
IMHO we should strive for PB11 or D-D
I am not a nuclear physicist, but play one on the internet.

Skipjack
Posts: 6051
Joined: Sun Sep 28, 2008 2:29 pm
[phpBB Debug] PHP Warning: in file [ROOT]/vendor/twig/twig/lib/Twig/Extension/Core.php on line 1236: count(): Parameter must be an array or an object that implements Countable

Re: Z-Pinch Renaissance

Postby Skipjack » Wed Oct 16, 2019 3:20 pm


williatw
Posts: 1862
Joined: Mon Oct 12, 2009 7:15 pm
Location: Ohio
[phpBB Debug] PHP Warning: in file [ROOT]/vendor/twig/twig/lib/Twig/Extension/Core.php on line 1236: count(): Parameter must be an array or an object that implements Countable

Re: Z-Pinch Renaissance

Postby williatw » Thu Oct 31, 2019 8:21 pm


Skipjack
Posts: 6051
Joined: Sun Sep 28, 2008 2:29 pm
[phpBB Debug] PHP Warning: in file [ROOT]/vendor/twig/twig/lib/Twig/Extension/Core.php on line 1236: count(): Parameter must be an array or an object that implements Countable

Re: Z-Pinch Renaissance

Postby Skipjack » Fri Nov 01, 2019 1:19 am

At the amounts of fuel that we are talking about here, tankage mass is of secondary concern, I think. For a mass mission at 0.1g (near) constant acceleration/deceleration, I calculated 70 tonnes, though actually it would be less since you lose fuel mass over time. So probably more like 50 tonnes. Tankage mass for this is really small. Maybe 4 tonnes, or so. Trip times would be so short that worries about keeping the fuels cool is IMHO not really necessary. We are talking trip times of days to Mars.
However, Q and the resulting Isp and engine mass do matter. Also a PB11 reactor would have to run even hotter than the D+He3 version and power supplies would have to be much bigger. The latter by itself (not even counting the bigger reactor core and lower engine efficiency) would probably already outweigh the benefits from the more dense Boron.


[phpBB Debug] PHP Warning: in file [ROOT]/vendor/twig/twig/lib/Twig/Extension/Core.php on line 1236: count(): Parameter must be an array or an object that implements Countable

Return to “News”

Who is online

Users browsing this forum: MSN [Bot] and 4 guests