Lightest isotope of Bh produced via the 209Bi(52Cr,n)260Bh reaction.

نویسندگان

  • S L Nelson
  • K E Gregorich
  • I Dragojević
  • M A Garcia
  • J M Gates
  • R Sudowe
  • H Nitsche
چکیده

The lightest isotope of Bh was produced in the new 209Bi(52Cr,n)260Bh reaction at the Lawrence Berkeley National Laboratory's 88-Inch Cyclotron. Positive identification was made by observation of eight correlated alpha particle decay chains in the focal plane detector of the Berkeley Gas-Filled Separator. 260Bh decays with a 35(-9)(+19) ms half-life by alpha particle emission mainly by a group at 10.16 MeV. The measured cross section of 59(-20)(+29) pb is compared to model predictions. The influence of the N=152 and Z=108 shells on alpha decay properties is discussed.

برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

ثبت نام

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

منابع مشابه

Preparation and Characterization of Ti(BH4)3(THF)3 and V(BH4)2(TMEDA)2 Complexes

We have recently synthesized Ti(BH4)3(THF)3 and V(BH4)2(TMEDA)2 complexes. The reaction of TiCl3(THF)3 with NaBH4 in dry THF gave flat blue crystals, Ti(BH4)3(THF)3. The reaction of VCl3 with NaBH4 in presence of N, N, N', N'- tetramethyle...

متن کامل

Experimental detection of alpha-particles from the radioactive decay of natural bismuth.

The only naturally occurring isotope of bismuth, 209Bi, is commonly regarded as the heaviest stable isotope. But like most other heavy nuclei abundant in nature and characterized by an exceptionally long lifetime, it is metastable with respect to alpha-decay. However, the decay usually evades observation because the nuclear structure of 209Bi gives rise to an extremely low decay probability and...

متن کامل

Comparison of Copper-61 Radioisotop Production Yield via Reactions of 64Zn(p,α)61Cu, natZn(p,x)61Cu, 61Ni(p,n)61Cu, and natNi(p,x)61Cu in Hospital Cyclotron using TALYS, EMPIRE, and MCNPX Nuclear Codes

Background & Aims: Copper-61 (61Cu) is a radioisotope with a half-life of 3.33 hours which decays to nickel-61 isotope byβ+  emission (61%) or electron capture (39%). This radioisotope can be used in the evaluation of the blood supply of the heart and low-oxygen cancer tissues imaging with PET. 61Cu is mainly produced by bombarding zinc (Zn), nickel (Ni) and cobalt (Co) targets in medium cyclot...

متن کامل

The production of the new gauge boson B H via e − γ collision in the littlest Higgs model

The new lightest gauge boson BH with mass of a few hundred GeV is predicted in the littlest Higgs model. BH should be accessible in the planed ILC and the observation of such particle can strongly support the littlest Higgs model. The realization of γγ and eγ collision will open a wider window to probe BH . In this paper, we study the new gauge boson BH production processes e γ → eγBH and eγ → ...

متن کامل

Measurement of neutron inelastic scattering cross sections for 52Cr from threshold up to 18 MeV.

The powerful white neutron spectrum from Gelina is used for the investigation of gamma ray production cross sections in the reaction 52Cr(n,n'gamma)52Cr. The gamma rays from the inelastic process are detected with two large volume HPGe detectors placed at 110 degrees and 150 degrees with respect to the beam direction. The neutron flux has been measured with a 235U fission chamber. For the main ...

متن کامل

ذخیره در منابع من


  با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید

برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

ثبت نام

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

عنوان ژورنال:
  • Physical review letters

دوره 100 2  شماره 

صفحات  -

تاریخ انتشار 2008