Sentences with phrase «heavy metal atoms»

Previous experiments at SLAC have used heavy metal atoms or sulfur as a marker for phasing.

That calculation requires measuring the x-rays» intensity and determining their phase, the relative timing — a harder problem traditionally solved by comparing the diffraction pattern from a pure crystal with one from a similar crystal in which heavy metal atoms substitute for some components of the crystal.

Not exact matches

The lens manufacturer Nion Co. in Kirkland, Washington, has found a way to tighten the beam so that atoms situated behind other atoms are clearly visible, as are heavy - metal atoms that were previously undetectable.

This new «Texas - sized» molecule — suitably dubbed texaphyrin — had a 20 % larger capacity, enough to carry an atom of the heavy metal gadolinium.

Instead of water, liquid sodium is typically used as a coolant because the sodium atoms are so much larger and heavier than neutrons that when they collide the neutrons simply ricochet off the sodium atom - much a like a small bullet ricocheting off a thick plate metal.

These stars are relatively more metals rich than outer - halo stars, with around three times more heavy atoms such as iron and calcium.

For example, when vegetable oil is heated in the presence of a heavy - metal catalyst and hydrogen, hydrogen atoms combine with the carbon chain to turn the oil solid.

The shells are made of aragonite, a form of calcium carbonate (CACO3) that readily swaps out its calcium atoms in favor of heavy metals, locking them into a solid form.