New Element, Lawrencium, Atomic Number 103

New Element, Lawrencium, Atomic Number 103

An element with atomic number 103 STAsuggested name Lawrencium (Lw)! is produced by bombardment of highly purified Cf (isotope nos. 249, 250, 251, and 252) with either B/sup 1//sup 0/ or B/sup 1//sup 1/. Alpha particle emission energies of 8.6 Mev and an 8 plus or minus 2-sec half life are attribute...

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Veröffentlicht in:Phys. Rev. Letters 1961-05, Vol.6 (9), p.473-475
Hauptverfasser: Ghiorso, Albert, Sikkeland, Torbjørn, Larsh, Almon E., Latimer, Robert M.
Format: Artikel
Sprache:eng
Schlagworte:
ALPHA PARTICLES
BORON 10
BORON 11
CALIFORNIUM
CALIFORNIUM 249
CALIFORNIUM 250
CALIFORNIUM 251
CALIFORNIUM 252
ELECTRIC CHARGES
ELEMENTS
ENERGY LEVELS
HALF-LIFE
ION BEAMS
LAWRENCIUM 257
MASS
MEASURED VALUES
NUCLEAR REACTIONS
PHYSICS
PRODUCTION
TARGETS
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Zusammenfassung:An element with atomic number 103 STAsuggested name Lawrencium (Lw)! is produced by bombardment of highly purified Cf (isotope nos. 249, 250, 251, and 252) with either B/sup 1//sup 0/ or B/sup 1//sup 1/. Alpha particle emission energies of 8.6 Mev and an 8 plus or minus 2-sec half life are attributed to the new element; it is thought that the mass number is 257. (T.F.H.)
ISSN:0031-9007
DOI:10.1103/PhysRevLett.6.473