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originally posted by: tc2290
originally posted by: Box of Rain
originally posted by: Starhooker
Did he identify 115 before or after the Russian s?
I find him 80% believable
The possibility of Element 115 existing (along withe several other yet-unconfirmed elements at the time) was EXPECTED for decades by science to exist before Lazar. Lazar was NOT (not by a longshot) the first person to publicly talk about element 115.
Many science textbooks prior to Lazar making his claim had a placeholder in the periodic table for element 115. All Lazar needed to do was read a textbook or maybe read a science magazine article about the possibility of element 115's existence to be able to make up a story in which element 115 isn't just hypothetical, but exists.
Put it this way, Element 120 has not yet been synthesized, but just like element 115 in Lazar's time, science does believe that it will someday be synthesized. So if I right now make up a fake story about how element 120 is used for FTL travel (knowing that element 120 is hypothesized to exist), and someday element 120 is found, does that mean that my fake story about FTL travel is real?
Lazar literally already said this. He never claimed to have "discovered" 115. It doesn't prove anything either way.
originally posted by: tjocksteffe
Science has still not dismissed the possibility that there is a stable isotope of element 115 with the characteristics that Lazar described.
The hypothetical isotope 291Mc is an especially interesting case as it has only one neutron more than the heaviest known moscovium isotope, 290Mc. It could plausibly be synthesized as the daughter of 295Ts, which in turn could be made from the reaction 249Bk(48Ca,2n)295Ts.[34] Calculations show that it may have a significant electron capture or positron emission decay mode in addition to alpha decaying and also have a relatively long half-life of several seconds. This would produce 291Fl, 291Nh, and finally 291Cn which is expected to be in the middle of the island of stability and have a half-life of about 1200 years, affording the most likely hope of reaching the middle of the island using current technology. Possible drawbacks are that the cross section of the production reaction of 295Ts is expected to be low and the decay properties of superheavy nuclei this close to the line of beta stability are largely unexplored.[34]
Generally the most massive stars can make elements as heavy as Iron which results from a process which releases energy. To make elements heavier than Iron requires energy be added to form the element, thus stars don't normally make those during their normal life.
originally posted by: tc2290
What? It's well known heavy elements are made in supernovae and the centre of solar masses.
That sounds like something you made up, like Lazar made his wrong physics up, but if you have a peer reviewed source saying that, I'd be interested to read it, though I'm pretty sure you don't since I think it's not true.
The bigger the supernova collapse, the heavier the elements produced.
Q Does a theoretical formulation exist which can predict the isotope yields of elements for the supernova of a given stellar mass?
A: ...The elements with atomic numbers greater than that of iron are made in a variety of processes, notably s-process (s for slow) and r-process (r for rapid) neutron capture. The way it works is this: you start out with a seed atom, say (56,26)Fe. You're in a region of high neutron flux (e.g. a supernova), so neutrons start to pile up on your atom. After you collect 6 neutrons, your atom becomes (62,26)Fe, which is unstable to beta decay on a time scale (about 1 minute, in this case) shorter than the time between neutron captures. Before it can collect any more neutrons, it beta decays to (62,27)Co, which beta decays to (62,28)Ni, which is stable. Now neutrons start to collect on the Ni, and so it goes, stepping through the periodic table. When the atomic number or mass number gets too high, however, neutron capture induces fission. Whether the island of stability can be reached therefore depends on the maximum atomic number that can support the r-process described above without induced fission occurring. Once the island of stability was predicted, people started writing lots of papers saying both yes, no and maybe to the question of whether the island of stability could be reached by the r-process. The field settled at a solid "maybe" before it petered out. So, in answer to your question, no--people have yet to determine whether the stable superheavy elements are formed at all. It's a matter of the nature of the universe, rather than one finding a star that's massive enough.
That depends on what you mean by stable.
originally posted by: tjocksteffe
Science has still not dismissed the possibility that there is a stable isotope of element 115 with the characteristics that Lazar described.
originally posted by: peskyhumans
a reply to: Hunkadinka
Lazar could very well be a liar but I looked up moscovium and thought this was interesting:
The hypothetical isotope 291Mc is an especially interesting case as it has only one neutron more than the heaviest known moscovium isotope, 290Mc. It could plausibly be synthesized as the daughter of 295Ts, which in turn could be made from the reaction 249Bk(48Ca,2n)295Ts.[34] Calculations show that it may have a significant electron capture or positron emission decay mode in addition to alpha decaying and also have a relatively long half-life of several seconds. This would produce 291Fl, 291Nh, and finally 291Cn which is expected to be in the middle of the island of stability and have a half-life of about 1200 years, affording the most likely hope of reaching the middle of the island using current technology. Possible drawbacks are that the cross section of the production reaction of 295Ts is expected to be low and the decay properties of superheavy nuclei this close to the line of beta stability are largely unexplored.[34]
That's from it's Wikipedia page. Moscovium is extremely radioactive and unstable with a half-life less than a second. However it's believed that one isotope of it may decay into an element that is smack-dab in the middle of the island of stability. A superheavy element with a very long half-life.
It could have applications for armor, weapons, and other things.
originally posted by: tjocksteffe
The amount of naturally occuring "stable" element 115 is irrevelant.
A sufficiently advanced civilization could theoretically make it, if they for example needed it to fuel their craft.
There are secrets, and then there are lies. Here's a clue on how to tell them apart.
originally posted by: Salander
a reply to: Box of Rain
I think Lazar was just telling the truth, as best he knew it. A guy caught up in some stuff way beyond his control.
He had heard others talk about 115, that was what he did for a living.
There is secret # in this world, especially in that Nevada desert.
originally posted by: mirageman
Truth is if Bob's story was real he has absolutely nothing but a story. Who's trying to prove him a fake? Oh!
Jacques Vallee noted Bob Bigelow sussed him out pretty quickly pretending he had the mysterious stable version of E115 but it was in fact industrial emulsifier.
See Forbidden Science 4