Tamper to delay motion and decrease ionization of a sample during short pulse x-ray imaging
View Patent ↗A system for x-ray imaging of a small sample comprising positioning a tamper so that it is operatively connected to the sample, directing short intense x-ray pulses onto the tamper and the sample, and detecting an image from the sample. The tamper delays the explosive motion of the sample during irradiation by the short intense x-ray pulses, thereby extending the time to obtain an x-ray image of the original structure of the sample.
1. An apparatus for x-ray imaging of a small sample, comprising:
a source of short intense x-ray pulses directed to the sample,
a tamper operatively connected to the sample wherein said tamper comprises a layer of material that surrounds the sample wherein said layer of material has a thickness determined by the size and composition of the sample, the wavelength, intensity and pulse length of the x-ray pulse and the composition of material, and
a detector.
2. The apparatus for x-ray imaging of a small sample of claim 1 wherein said source of short intense x-ray pulses is an x-ray free electron laser.
3. The apparatus for x-ray imaging of a small sample of claim 1 wherein said tamper is water.
4. The apparatus for x-ray imaging of a small sample of claim 1 wherein said tamper is hydrogen.
5. The apparatus for x-ray imaging of a small sample of claim 1 wherein said tamper is helium.
6. The apparatus for x-ray imaging of a small sample of claim 1 wherein said tamper has a thickness of the order of 1 nanometer.
7. The apparatus for x-ray imaging of a small sample of claim 1 wherein said tamper comprises a layer of material that surrounds a sample that is approximately spherical in shape.
8. The apparatus for x-ray imaging of a small sample of claim 1 wherein said tamper comprises a thin layer of nearly constant thickness, which hugs the shape of the sample.
9. The apparatus for x-ray imaging of a small sample of claim 1 wherein said tamper comprises a liquid tamper material that has a high surface tension.
10. The apparatus for x-ray imaging of a small sample of claim 1 wherein said tamper comprises a layer of material that surrounds a sample that is a single molecule.
11. The apparatus for x-ray imaging of a small sample of claim 1 wherein said tamper comprises a layer of material that surrounds a sample that comprises multiple molecules.
12. The apparatus for x-ray imaging of a small sample of claim 1 wherein said tamper comprises a layer of material that surrounds a sample that is a biological molecule.
13. The apparatus for x-ray imaging of a small sample of claim 1 wherein said tamper comprises a layer of material that surrounds a sample that comprises multiple biological molecules.
14. The apparatus for x-ray imaging of a small sample of claim 1 wherein said tamper comprises a layer of material that surrounds a sample that is a non-biological sample.
15. The apparatus for x-ray imaging of a small sample of claim 1 wherein said tamper comprises a layer of material that surrounds a sample that is a small crystal.
16. The apparatus for x-ray imaging of a small sample of claim 1 wherein said tamper comprises a layer of material that surrounds a sample that is a molecular complex.
17. The apparatus for x-ray imaging of a small sample of claim 1 wherein said tamper comprises a layer of material that surrounds the sample wherein said layer of material has a thickness determined by the analytic formula ΔR=1.2{1−[b/(1+b)]−⅓}R, where R is the initial radius of the sample and b is the ratio of the number of trapped electrons in the molecule to the number of escaped electrons.
18. The apparatus for x-ray imaging of a small sample of claim 1 wherein the sample has a radius and wherein said tamper has a thickness of between 3.7% and 25% of said radius of the sample.
19. An apparatus for x-ray imaging of a small sample, comprising:
source means for directing short intense x-ray pulses to the sample,
tamper means operatively connected to the sample for delaying the explosive motion and reducing the ionization of the sample during irradiation by said short intense x-ray pulse wherein said tamper means comprises a layer of material that surrounds the sample wherein said layer of material has a thickness determined by the size and composition of the sample, the wavelength, intensity and pulse length of the x-ray pulse and the composition of material, and
detector means for detecting an image from the sample.
20. The apparatus for x-ray imaging of a small sample of claim 19 wherein said source means is a x-ray free electron laser.
21. The apparatus for x-ray imaging of a small sample of claim 19 wherein said tamper means is water.
22. The apparatus for x-ray imaging of a small sample of claim 19 wherein said tamper means is hydrogen.
23. The apparatus for x-ray imaging of a small sample of claim 19 wherein said tamper is helium.
24. The apparatus for x-ray imaging of a small sample of claim 19 wherein said tamper means has a thickness of the order of 1 nanometer.
25. The apparatus for x-ray imaging of a small sample of claim 19 wherein said tamper means comprises a layer of material that surrounds a sample that is approximately spherical in shape.
26. The apparatus for x-ray imaging of a small sample of claim 19 wherein said tamper means comprises a thin layer of nearly constant thickness, which hugs the shape of the sample.
27. The apparatus for x-ray imaging of a small sample of claim 19 wherein said tamper means comprises a liquid tamper material that has a high surface tension.
28. The apparatus for x-ray imaging of a small sample of claim 19 wherein said tamper means comprises a layer of material that surrounds a sample that is a single molecule.
29. The apparatus for x-ray imaging of a small sample of claim 19 wherein said tamper means comprises a layer of material that surrounds a sample that comprises multiple molecules.
30. The apparatus for x-ray imaging of a small sample of claim 19 wherein said tamper means comprises a layer of material that surrounds a sample that is a biological molecule.
31. The apparatus for x-ray imaging of a small sample of claim 19 wherein said tamper means comprises a layer of material that surrounds a sample that comprises multiple biological molecules.
32. The apparatus for x-ray imaging of a small sample of claim 19 wherein said tamper means comprises a layer of material that surrounds a sample that is a non-biological sample.
33. The apparatus for x-ray imaging of a small sample of claim 19 wherein said tamper means comprises a layer of material that surrounds a sample that is a small crystal.
34. The apparatus for x-ray imaging of a small sample of claim 19 wherein said tamper means comprises a layer of material that surrounds a sample that is a molecular complex.
35. The apparatus for x-ray imaging of a small sample of claim 19 wherein said tamper means comprises a layer of material that surrounds the sample wherein said layer of material has a thickness determined by the analytic formula ΔR=1.2{1−[b/(1+b)]−⅓}R, where R is the initial radius of the sample and b is the ratio of the number of trapped electrons in the molecule to the number of escaped electrons.
36. The apparatus for x-ray imaging of a small sample of claim 19 wherein the sample has a radius and wherein said tamper means has a thickness of between 3.7% and 25% of said radius of the sample.
37. A method of x-ray imaging of a small sample, comprising the steps of:
positioning a tamper so that it is operatively connected to the sample wherein said step of positioning a tamper so that it is operatively connected to the sample comprises positioning a layer of material around a sample at a thickness determined by the size and composition of the sample, the wavelength, intensity and pulse length of the x-ray pulse and the composition of material,
directing short intense x-ray pulses onto said tamper and the sample, and
detecting an image from the sample.
38. The method for x-ray imaging of a small sample of claim 37 wherein said step of directing short intense x-ray pulses onto said tamper and the sample comprises directing x-ray free electron laser pulses onto said tamper and the sample.
39. The method for x-ray imaging of a small sample of claim 37 wherein said step of positioning a tamper so that it is operatively connected to the sample comprises positioning a water tamper so that it is operatively connected to the sample.
40. The method for x-ray imaging of a small sample of claim 37 wherein said step of positioning a tamper so that it is operatively connected to the sample comprises positioning a water tamper so that it is operatively connected to the sample by wetting said water tamper on the sample.
41. The method for x-ray imaging of a small sample of claim 37 wherein said step of positioning a tamper so that it is operatively connected to the sample comprises positioning a hydrogen tamper so that it is operatively connected to the sample.
42. The method for x-ray imaging of a small sample of claim 37 wherein said step of positioning a tamper so that it is operatively connected to the sample comprises positioning a helium tamper so that it is operatively connected to the sample by wetting said helium tamper on the sample.
43. The method for x-ray imaging of a small sample of claim 37 wherein said step of positioning a tamper so that it is operatively connected to the sample comprises positioning a hydrogen tamper so that it is operatively connected to the sample by wetting said hydrogen tamper on the sample.
44. The method for x-ray imaging of a small sample of claim 37 wherein said step of positioning a tamper so that it is operatively connected to the sample comprises positioning a tamper that has a thickness of the order of 1 nanometer so that it is operatively connected to the sample.
45. The method for x-ray imaging of a small sample of claim 37 wherein said step of positioning a tamper so that it is operatively connected to the sample comprises positioning a layer of material around a sample that is approximately spherical in shape.
46. The method for x-ray imaging of a small sample of claim 37 wherein said step of positioning a tamper so that it is operatively connected to the sample comprises positioning a thin layer of nearly constant thickness around the sample.
47. The method for x-ray imaging of a small sample of claim 37 wherein said step of positioning a tamper so that it is operatively connected to the sample comprises positioning a liquid tamper material that has a high surface tension around the sample.
48. The method for x-ray imaging of a small sample of claim 37 wherein said step of positioning a tamper so that it is operatively connected to the sample comprises positioning a layer of material around a sample that is a single molecule.
49. The method for x-ray imaging of a small sample of claim 37 wherein said step of positioning a tamper so that it is operatively connected to the sample comprises positioning a layer of material around a sample that comprises multiple molecules.
50. The method for x-ray imaging of a small sample of claim 37 wherein said step of positioning a tamper so that it is operatively connected to the sample comprises positioning a layer of material around a sample that is a biological molecule.
51. The method for x-ray imaging of a small sample of claim 37 wherein said step of positioning a tamper so that it is operatively connected to the sample comprises positioning a layer of material around a sample that comprises multiple biological molecules.
52. The method for x-ray imaging of a small sample of claim 37 wherein said step of positioning a tamper so that it is operatively connected to the sample comprises positioning a layer of material around a sample that is a non-biological sample.
53. The method for x-ray imaging of a small sample of claim 37 wherein said step of positioning a tamper so that it is operatively connected to the sample comprises positioning a layer of material around a sample that is a small crystal.
54. The method for x-ray imaging of a small sample of claim 37 wherein said step of positioning a tamper so that it is operatively connected to the sample comprises positioning a layer of material around a sample that is a molecular complex.
55. The method for x-ray imaging of a small sample of claim 37 wherein said step of positioning a tamper so that it is operatively connected to the sample comprises positioning a layer of material around a sample that comprises a two-region structure with a neutralized core and a highly charge outer layer wherein said highly charged outer layer will explode very quickly due to Coulomb forces and said inner core will explode much slower because of charge neutralization.
56. The method for x-ray imaging of a small sample of claim 37 wherein said step of positioning a tamper so that it is operatively connected to the sample comprises positioning a layer of material around a sample at a thickness determined by the analytic formula ΔR=1.2{1−[b/(1+b)]−⅓}R, where R is the initial radius of the sample and b is the ratio of the number of trapped electrons in the molecule to the number of escaped electrons.
57. The method for x-ray imaging of a small sample of claim 37 wherein said sample has a radius and wherein said step of positioning a tamper so that it is operatively connected to the sample comprises positioning a layer of material around a sample at a thickness of between 3.7% and 25% of said radius of the sample.