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  • oxygen
  • Microscale ion microprobe analysis reveals consistent intracrystalline patterns in oxygen isotope composition and boron and iron contents, reflecting evolution of the hydrothermal system from magmatic- to meteoric-dominated conditions, and repetitive influx of magmatic fluids. (geoscienceworld.org)
  • Lab's
  • The group that found the new isotopes is led by Heino Nitsche, head of the Heavy Element Nuclear and Radiochemistry Group in Berkeley Lab's Nuclear Science Division (NSD) and professor of chemistry at the University of California at Berkeley. (phys.org)
  • We were encouraged to try creating new superheavy isotopes by accelerating calcium 48 projectiles with Berkeley Lab's 88-Inch Cyclotron and bombarding plutonium 242 targets inside the Berkeley Gas-filled Separator here," Nitsche says. (phys.org)
  • He was especially proud of the Lab's isotope development program, which he helped create and then led. (oakridger.com)
  • However, in an interview in 2003 with Steve Stow for the ORNL Oral History Project, he said the isotope program started at the Lab's Graphite Reactor, which was built in 1943, had not received the recognition it deserves, either locally or nationally. (oakridger.com)
  • unstable
  • Information gained from the new isotopes will contribute to a better understanding of the theory of nuclear shell structure, which underlies predictions of an "Island of Stability," a group of long-lasting isotopes thought to exist amidst a sea of much shorter-lived, intrinsically unstable isotopes of the superheavy elements. (phys.org)
  • inorganic
  • This paper details the use of complimentary organic and inorganic isotope techniques for the analysis of tea samples from Asia. (edu.au)
  • density
  • Othe … r properties related to mass also vary by isotope: density (mass/volume), boiling point, freezing point, and the degree of ion deflection in a mass spectrometer are perhaps the most obvious of these related properties. (answers.com)
  • origin
  • Although a great deal of geochemical and petrological research has been conducted to investigate the origin of these volcanoes, application of combined Hf and Nd isotopes to study their mantle source characteristics has not been accomplished previously. (auburn.edu)
  • separation
  • Also, separation work in the program provided chemical proof for the existence of Element 61 in the periodic table. (oakridger.com)
  • This is thought to be a result of natural isotope separation processes that occur from solar heating of ices in comets. (wikipedia.org)
  • nuclear
  • Ten years earlier scientists at the Joint Institute for Nuclear Research in Dubna, Russia, had isolated element 114 but it had not been confirmed until the Berkeley work. (phys.org)
  • outer
  • The possibility of finding "magic" or "doubly magic" isotopes of superheavy elements (with both proton and neutron outer shells completely filled) led to predictions of a region of enhanced stability in the 1960s. (phys.org)
  • These annuli are identified as the inner and outer fuel elements, since one fits inside the other. (unt.edu)
  • The inner element consists of 171 identical fuel plates, and the outer element contains 369 identical fuel plates differing slightly from those in the inner element. (unt.edu)
  • results
  • Hf and Nd isotope results indicate that the Tengchong volcanics plot between the mantle igneous rock and seawater arrays. (auburn.edu)