So I'm currently to writing a semi-hard Science Fiction novel, and long story short, I need Earth to go "boom boom bye bye"... I work in a STEM field myself, but physics has never been my strong suit so play nice lol, I'm just here asking you lovely folks for some guidance on your subject of study.

I'll ask my questions first, then try to explain it in the context of my story...

1. In relatively simple terms, how does one collect and store antimatter? What devices are used?
2. Hypothetically, how much antimatter (grams? kilos?) would it take to "blow up" the planet, or at the very least, the entire Eurasian continent?
3. How long would it take to collect that much antimatter, provided energy and money were no object?
4. Would such a massive antimatter explosion affect the rest of solar system? Particularly, the Moon and Mars? (I know the moon is done for, I'd just like some insight on how bad it is)

So as for my story, the Earth being left uninhabitable (or just plain destroyed) is plot device which drives the scattered remnants of humanity left behind in small self-sufficient colonies around the solar system (on Mars, Titan, Europa, ...) to make a new cradle of humanity on Mars.

When answering, place imagine being 150 years in the future. Fusion power is widespread and Helium-3 mines on the moon are abundant. Advance in Robotics, AI, and 3D printing have made many previously impossible tasks possible. Humanity has given it's full support for the Antimatter project, with all the nations of the world collaborating to bring it to reality.