Relay-Version: version B 2.10 5/3/83; site utzoo.UUCP Posting-Version: version B 2.10.1 6/24/83; site ut-sally.UUCP Path: utzoo!watmath!clyde!burl!ulysses!mhuxj!ihnp4!zehntel!dual!qantel!intelca!hplabs!hao!seismo!ut-sally!crandell From: crandell@ut-sally.UUCP (Jim Crandell) Newsgroups: net.physics Subject: Re: Re: Helium baloon in car Message-ID: <3447@ut-sally.UUCP> Date: Tue, 25-Sep-84 10:31:18 EDT Article-I.D.: ut-sally.3447 Posted: Tue Sep 25 10:31:18 1984 Date-Received: Fri, 28-Sep-84 06:18:14 EDT References: <12146@sri-arpa.UUCP> <1488@nsc.UUCP> Organization: U. Texas CS Dept., Austin, Texas Lines: 53 > > My original remarks still apply for Helium 9875, a extreemly rare but > > very heavy isotope of this element. > > Helium 9875 eh?!? give us some facts on this isotope! :=) The answers to several of these are really fairly obvious. > melting/boiling temp? Melting point is about twice the temperature of the center of the sun. Several years will elapse before the boiling point is determined. > sp. grav? This one's problematic. After the nucleus absorbs the four innermost planets, its mass will not be accurately measurable by means of any existing technology. > whats the rest mass? Probably a Requiem. > is it stable? if not, give the decay system plus gamma levels if any I certainly hope so. If put out to pasture it could certainly be expected to eat up everything in sight. > whats the neutron cross section? The cross section of a neutron is about the same as that of a proton. (Did you capture that?) > what reactions does it have to say neutrons are protons additions? This is a very good question. A critter of this nature may well be expected to exhibit numerous reactionary tendancies. Protons may be additions, but the original building must therefore have been very small. (I'd estimate it would bring about 80 grand in the local market.) > what about the electron shell shape? Actually I'm not sure about this one. I'd suggest a chambered nautilus. A colleague of mine suggested Bourne. > cost per gm.? Please specify quantity. I'm fairly certain that single-gram pricing is irrelevant unless you have a source of fast neutrons handy. -- Jim Crandell, C. S. Dept., The University of Texas at Austin {ihnp4,seismo,ctvax}!ut-sally!crandell