Positive Identification of Two Alpha-Particle-Emitting Isotopes of Element 104

1969/06/16 by A. Ghiorso, M. Nurmia, James W. Harris +2 · 4 citations
Physics and Astronomy · Medicine · #Nuclear physics research studies #Nuclear Physics and Applications #Boron Compounds in Chemistry

paper · pdf · doi:10.1103/physrevlett.22.1317

openalex publication_date 1969/06/16 · openalex created_date 2025/10/10 · openalex updated_date 2026/06/11

Abstract

We have studied isotopes of element 104 formed by bombarding ²⁴⁹Cf with ¹²C and ¹³C ions. ²⁵⁷104 and ²⁵⁹104 were positively identified by milking their daughters, ²⁵³No and ²⁵⁵No. ²⁵⁷104 is a 4.5-sec alpha-particle activity with a complex spectrum; ²⁵⁹104 is likewise an alpha emitter with a half-life of 3 sec. ²⁵⁸104 is tentatively identified as an 11-msec spontaneous-fission activity.

Cited by

• X-Ray Identification of Element 104
• Excitation function for the production ofBh<mml:mprescripts/><mml:none/>262(Z=107) in the odd-Z-projectile reactionPb<mml:mprescripts/><mml:none/>208(Mn<mml:mprescripts/><mml:none/>55,n)
• Group 4 element [wikipedia]
• Rutherfordium [wikipedia]