Preparative scale mass spectrometry: A brief history of the calutron

  title={Preparative scale mass spectrometry: A brief history of the calutron},
  author={Alfred L Yergey and A. Karl Yergey},
  journal={Journal of the American Society for Mass Spectrometry},
  • A. Yergey, A. K. Yergey
  • Published 1 September 1997
  • Environmental Science
  • Journal of the American Society for Mass Spectrometry

The Isotopic Composition of the Elements

Early in the twentieth century, Rutherford realized that Thomson’s late nineteenth century plain cake model for the atom, describing the atom as consisting of electrons floating around in a positive

A new bench-top approach to the isotopic purification of 244Pu

A new approach to isotopic purification has been developed and applied to the production of a small quantity of 244Pu with an isotopic purity >99.996 %, allowing for higher spiking levels of the isotopically purified244Pu tracer to be used in environmental level sample analysis.

A new method of isotope enrichment and separation: preferential embedding of heavier isotopes of Xe into amorphous solid water.

A new method for isotope separation involving the embedding of atoms and molecules into ice based upon isotope dependent embedding, i.e. capture, in a cryogenic matrix which exhibits excellent single-pass enrichment as demonstrated successfully for selected isotopes of Xe.

Soft-landing preparative mass spectrometry.

This review of soft landing in the hyperthermal and thermal kinetic energy regimes is organized according to instrumental considerations and molecular families, with a discussion of theoretical work at the end.

Mass selective separation applied to radioisotopes of cesium.

This work demonstrated a 134 Cs/137 Cs activity ratio enhancement of >4 orders of magnitude and complete removal of 137 Cs spectral features from the implanted target mass (i.e. 134).

Plasma mass filtering for separation of actinides from lanthanides

Separating lanthanides from actinides is a key process in reprocessing nuclear spent fuel. Plasma mass filters, which operate on dissociated elements, offer conceptual advantages for such a task as

Oak Ridge, CP-1, and the Clinton Engineer Works

Of every dollar spent on the Manhattan Project, just over 60 cents went into the Clinton Engineer Works (CEW), the 90-square-mile tract in eastern Tennessee chosen in the fall of 1942 as the location

Dempster's descendants-The core of the development of mass spectrometry.

The development of mass spectrometry, as distinct from nuclear science, was shaped far more by Dempster than by Aston, and this influence is seen in several aspects of instrument design and practice, and it has continued into the 21st century.



Electromagnetic Separation of Isotopes at Oak Ridge

From my narrow viewpoint after an extended and complete engrossment with this program for so many years, it is gratifying to learn that such men as those mentioned above share my belief that the work has indeed been worthwhile.

Experiments with High Velocity Positive Ions. II. The Disintegration of Elements by High Velocity Protons

In a previous paper we have described a method of producing high velocity positive ions having energies up to 700,000 electron volts. We first used this method to determine the range of high-speed

Products of the Fission of the Uranium Nucleus

O. Hahn and F. Strassmann1 have discovered a new type of nuclear reaction, the splitting into two smaller nuclei of the nuclei of uranium and thorium under neutron bombardment. Thus they demonstrated

Iraq's Secret Nuclear Weapons Program

The inspections of Iraq mandated by the United Nations as a cease‐fire condition at the end of the Gulf War in February 1991 have revealed a clandestine nuclear materials production and weapons

Reminiscences of Los Alamos, 1943‐1945 and City Behind a Fence: Oak Ridge, Tennessee 1942–1946

Oak Ridge, Tennessee, was created by the U.S. government during World War II to aid in the construction of the first atomic bomb. Drawing on oral history and previously classified material, this book

Radioactive Element 93

Properties of 94(239)

Radioactive Element 94 from Deuterons on Uranium

The Equivalence of Mass and Energy