Questions tagged [antimatter]

For questions about the material composed of antiparticles (which have the opposite charge from the equivalent particles of regular matter), its uses and role in the universe, and its interaction with regular matter.

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5
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2answers
133 views

Harvesting Antimatter from Solar Flares

An old NASA news article I came across states that a solar flare observed in 2002 produced around a half-kilo of antimatter: https://www.nasa.gov/vision/universe/solarsystem/rhessi_antimatter.html How ...
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9answers
2k views

How to annihilate an object completely? [closed]

I would like to annihilate an object (approx size of a table), in that I want to make it not exist in any recognizable form. (gamma radiation, etc. would be fine). My knowledge of physics would fit on ...
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2answers
77 views

How far would an antimatter asteroid made inside our solar system? [closed]

Imagine right now an antimatter asteroid the size of Hawaii of extraterrestrial origin enters our solar system and is on a collision course with one of the inner planet, Mercury at a fantastic speed ...
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4answers
618 views

The use of antimatter being a solution to the Fermi Paradox [closed]

While there are many proposed solutions to the Fermi Paradox, one option in particular stood out to me as a likely candidate: antimatter. It's no secret that antimatter is one of the most dangerous ...
2
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1answer
139 views

How could an antimatter battery take the shaking and knocks from being in an active android? [closed]

There are quite a few questions on here related to using antimatter-matter annihilations as an energy source or weapon and it seems one big issue is the safety issue of it not all going off if damaged....
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6answers
463 views

Cons of Antimatter Weaponry

In the story I'm creating, a major weapon type of humanity will be Antimatter based weaponry. This is a fairly new technology, as antimatter production facilities have just reached the size and ...
4
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1answer
126 views

Antimatter filled buckyballs - The energy storage medium of the future

Antimatter gets used a lot in SciFi due to it's mind-bending energy density. If you can store it in a form that requires no power and is at least mildly idiot-proof then you've just solved half of ...
6
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3answers
456 views

How long and where could an antimatter object survive in space?

Are there any areas of space where an antimatter object, the size of a small house could survive without coming into contact with any or extremely minimal amounts of matter? I had assumed in all ...
13
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9answers
5k views

How fast does an antimatter bullet need to move to pierce rather than explode?

The environment is set in (ideal) space with no air for the bullet to interact with. It should encounter nothing until it reaches its target. The bullet is assumed to be a perfect sphere with a ...
7
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9answers
370 views

Would there be any place for nuclear powered spaceship in the world proliferated by antimatter propulsion?

Nuclear fission rocket is becoming obsolete and is superseded by the more efficient antimatter engine, in fact there will be no pollution and the efficiency is around 100%. I'm wondering if in a ...
25
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9answers
7k views

Would an antimatter bullet fired from a sniper rifle even reach its target?

Let's say our villain fires an antimatter rifle from behind a magnetic field over a km from the target. The bullet is traveling over 1000 meters per second. If it reaches its target, the 13 gram ...
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1answer
168 views

How much antimatter can we theoretically hold in a Minimum Magnetic Field Trap?

I will be using solar antimatter production via Schwinger pair production like the VARIES project but I need to store it for bulk use. The containment will be a satellite orbiting the sun close enough ...
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5answers
5k views

What would a life-form be like if it's antimatter-based

I've been thinking of the idea of creating and adding an alien species that's antimatter-based (being from a universe where antimatter became the majority instead of "normal matter"). However, I'm ...
6
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3answers
153 views

Could anti-matter virtual particles be theoretically harvested from the quantum flux?

I was wondering if a vacuum created within a particular material in the shape of sphere could be used to harvest anti-matter from virtual particles? Within the vacuum, theoretically, virtual ...
15
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9answers
3k views

Methods and Feasibility of Antimatter Mining?

Say 200-300 years in the future, humankind has colonized much of the solar system, using a combination of laser thermal drives and solid-core nuclear rockets (fusion never really panned out). ...
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3answers
345 views

Is antimatter boosted nuclear weapon theoretically possible?

Are there any fundamental obstacles to using a nuclear explosion as a trigger for antimatter generation and thus considerably increasing the yield?
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0answers
283 views

The great battery swap [closed]

An alien contra-organization wants to spur the development of Earth to help humans in the near-future in presence of a prime-directive like law. They cannot establish actual contact, so they do the ...
5
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3answers
154 views

Antimatter internal combustion engine

I have an idea for an extremely crackpot engine design for a future society I may incorporate into my story. What would happen is individual antihydrogen molecules injected into the center of carbon ...
6
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1answer
235 views

Feasibility of an Antimatter-Catalysed Ram Augmented Interstellar Rocket (AC-RAIR)

A fictional starship that I am designing functions via a form of Bussard ramjet that uses hydrogen from the interstellar medium as reaction mass, not as fuel. In order to accelerate the propellant, ...
2
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2answers
177 views

How can I destroy a planet with antimatter?

So I found the base of these pesky rebels on this planet and I am tasked with destroying the planet to eliminate the rebels once and for all. Unfortunately, my death star has malfunctioned and has ...
27
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6answers
8k views

Would one atom of antimatter be lethal if annihilated inside the brain?

I am dealing with a dystopian story that tries to come up with some kind of total surveillence or control from higher authorities. The authorities threaten to kill those who disobey them by simply ...
17
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2answers
4k views

How would an antimatter reactor actually work?

In a far future, antimatter is used for energy storage: Huge space stations with powerful solar arrays orbit the sun a bit inside Mercurys orbit, using the energy to create small amounts of anti-...
29
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30answers
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If antimatter were common starship fuel, what could prevent it from being commonly weaponized? [duplicate]

My scenario involves a high sci-fi setting, where starships are readily available to civilians with sufficient qualifications and money. Most civilians would not be fueling ships with antimatter ...
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1answer
149 views

Reason to stay on a doomed spaceship [closed]

For plot reasons, the captain must stay on the ship while his crew (including his wife) get in escape pods and leave. Unfortunately we haven't found a satisfying reason for this yet. What engine or ...
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3answers
1k views

How much energy would be released in a collision of planets of matter & antimatter?

Let's assume that the Earth has a body of equivalent mass directed at it that is made up purely of antimatter. This antimatter is held back in a containment bubble I created that moves it towards the ...
2
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4answers
619 views

How to produce enough power to create a pair of proton-antiproton?

I've recently discovered something great: the Schwinger effect. It says that if you concentrate enough power thanks to laser into a single point in space, it will spawn a pair of proton and antiproton....
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1answer
214 views

How could we produce electricity thanks to antimatter?

Imagine we had an easy way to produce antimatter, we could use it for interstellar travel, deadly weapons or more; but I've thought: How could we use it to produce electricity? As Antimatter ...
8
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1answer
127 views

What conditions could create a planet that has higher amounts of antimatter in its radiation belt?

In the science fiction setting I'm working on, one of the factions are supposed to be using naturally occurring antimatter because the systems they reside in have sufficient natural sources of it. I'...
3
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1answer
117 views

Manipulating decaying positron-emitting isotopes for positron “mining”

In a previous question, it was established that antimatter could be "mined" through positron-emitting isotopes. By gathering positrons from decaying positron-emitting isotopes (potassium-40 and ...
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3answers
234 views

Energy gain/loss of using synthesized antimatter as a fuel?

Setting aside concerns of containment for now; how much energy would it take to create antimatter? And how much of it would we get back using it as a fuel in a matter-antimatter reactor? What I'm ...
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6answers
726 views

Is it realistic to have a moon made of antimatter?

I have an idea for a Sci-Fi story that involves a planet with a third moon made entirely of antimatter, before I delve further into this concept, I would appreciate input on how to make this ...
24
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7answers
5k views

Orbital Bombardment with Anti Matter

I am trying to figure out the feasibility of using Anti Matter to bombard the surface of a planet from a position in space. My gut feeling is that its not very feasible. Wouldnt the Anti Matter ...
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4answers
405 views

An anti matter planet behaving like a star

In your space journey your ship systems have spotted an unusual source of gamma rays: it's the size and the mass of a planet and it has a pulsating behaviour. Further observations shows that you are ...
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2answers
1k views

How do you communicate with antimatter beings?

So aliens have arrived in the solar system. They have faster-than-light travel technology and the ability to handwave away the supposed causality violations that such an invention causes They're ...
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3answers
309 views

Safely shooting antimatter

Lets say I have this nice gun which can shoot a certain amount of antimatter. After hearing answers about why that won't work, I added a magical coating to the projectile making sure the antimatter ...
9
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6answers
899 views

Could antimatter be used as the propellant in a gun?

And not some big space gun a mile wide, I'm talking more like "could you pack a nanogram of antihydrogen into a shotgun shell or rifle casing and fire a bullet with it?" A few conditions and ...
26
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18answers
8k views

Can spacecraft defend against antimatter weapons? How?

Here is what we know: We have the means to create stable antimatter We can direct it in a beam It can travel nearly as fast as light with ease Antimatter and matter combine in dangerous ways: one ...
6
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2answers
1k views

How small can you make an antimatter generator?

Reasonably speaking, I mean. I know that, theoretically at least, there probably isn't any reason you couldn't build a crude generator the size of a bacterium, but if we extrapolate from today's ...
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1answer
203 views

Accelerating a massive spaceship

How much wattage would you need to accelerate a four petaton spaceship by 1g for a year? This should be about enough to reach near light speed, which is perfect for interstellar cruising, but I'm ...
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4answers
1k views

How to make antimatter batteries safe

Assuming the wars of the far, far future aren't either fought exclusively by unmanned spacecraft/robots/drones or in ways so incomprehensible to us that comparisons are meaningless, the only foolproof ...
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4answers
2k views

Anti-matter containment

I've been looking into anti-matter and a relatively realistic way to contain it through gravity in my story. I'm probably incorrect in the theoretical physics of the idea but, I'm imagining that the ...
6
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4answers
537 views

How can I make an anti-matter “rod” warhead for interplanetary delivery?

In the story I'm writing, a civil war is fought between Earth and Mars. Although there is a huge orbital and ground war campaign, conditions deteriorate to the point where Earth decides to unleash the ...
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3answers
250 views

Could We Restart Mars's Core With Antimatter?

Forget about how we get it there, some kind of top secret experiment on mars gone wrong in all the right ways. If somehow Mars's core was mixed with some amount of antimatter, and assuming 100% of it ...
3
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2answers
428 views

If Earth was converted into energy by antimatter-matter collision would the energy “destroy” the observable universe?

If half the earth was made antimatter and contacted the other half all at once, would the resulting energy be enough to "destroy" the observable universe? I did some math based on the mass of the ...
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1answer
283 views

A spacecraft the size of Apollo 11's lunar module, composed of antimatter, around a normal star

After writing this question, I came up with a new question. Consideration The considerations are mostly similar to the linked question (reading it is highly encouraged, as I am trying to post as ...
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3answers
1k views

Antimatter planet on normal matter star

Consideration For the sake of argument, please assume the following: The planet in question is around the size of Earth The planet may contain native intelligent life, artificially engineered The ...
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3answers
330 views

How could a bad random number generator explain baryon asymmetry?

How can a character explain baryon asymmetry (there is more matter than antimatter) by the universe being a simulation with a slightly imbalanced random number generator being employed at the point ...
6
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3answers
691 views

How can a dragon utilize antimatter in combat?

Frankly speaking, I haven't come up with a design for my dragon; however, I want to design a dragon that can feast on the energy released from the constant bombardment of cosmic rays (either solar or ...
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2answers
793 views

Antimatter Storage

Is it possible to contain similarly charged particles in a magnetic field or traps, in generally large scale (say, all of them have positive charge), and could be utilized as power reserves quite ...
7
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4answers
881 views

If we had easier access to antimatter, how could we use it?

Antimatter annihilation is the best source of energy per weight. However, antimatter is not readily available anywhere within reachable distance, it's insanely difficult to produce and contain. ...