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Matter Beam
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ToughSF
The blog: toughsf.blogspot.com
The Discord: discord.gg/aFvTbty
Tough SF
Tough SF
toughsf.blogspot.co.uk
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+Luke Campbell
Hi!
It's been a while. I hope you're doing well.

I'm trying to put together a particle beam blog post and I'd like your opinion on these two things:

-Milli-kelvin ion sources do exist and can be emitted as a form of atom beam. Can they be fed into a particle accelerator and accelerated to relativistic velocities without being significantly heated?

-Beam expansion optics. I know that particle beams cannot be 'focused' like a laser because, but they can be expanded to reduce their divergence. Is there at 'catch' to doing this?

Thanks for any help,
MB
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This concept is very promising. Zerraspace put numbers on paper and worked out just how far it can be taken - there is now a very good reason for expanding human settlements out to the Outer Solar system, something that SciFi has struggled with in the past.

Text, numbers, tables and equations are his.
I helped with diagrams, editing and illustrations.
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+William Black
How are you doing? I haven't seen you online for weeks!
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Let's tackle another SciFi trope: Mirrors.
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+Winchell Chung
I remember complaining that the cover art for John Lumpkin's 'Through Struggle, The Stars' showed warships with tiny radiators, too small to handle the multiple mega/gigawatts of heat that the engine and weapons were producing.

I'm now reading it and I'm mistaken.

The radiators are retracted for combat and they are relying on internal heatsinks.
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For +Sevoris Doe
External hull markings by Virgin Galactic.
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We revisit the Hydrogen Steamer design with improvements and more reliable estimates for detection distances.

http://toughsf.blogspot.com/2018/04/permanent-and-perfect-stealth-in-space.html
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We revisit the Hydrogen Steamer design with improvements and more reliable estimates for detection distances.
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Hi +Rhys Taylor
I'm trying to bring attention to the vast number of questions and answers you have collected here: http://astrorhysy.blogspot.co.uk/p/q-a.html#zappidtydoodah

Is it OK with you if I tweet a selected few questions/answers you have on that page, with proper links, references and credit?

https://twitter.com/ToughSf/status/979416432319586305
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