scholarly journals Synchrotron radiation-based Mössbauer spectra of174Yb measured with internal conversion electrons

2014 ◽  
Vol 104 (8) ◽  
pp. 082411 ◽  
Author(s):  
Ryo Masuda ◽  
Yasuhiro Kobayashi ◽  
Shinji Kitao ◽  
Masayuki Kurokuzu ◽  
Makina Saito ◽  
...  
Keyword(s):  
Synchrotron Radiation ◽  
Internal Conversion ◽  
Mössbauer Spectra ◽  
Conversion Electrons ◽  
Mossbauer Spectra ◽  
Internal Conversion Electrons

scholarly journals 61Ni synchrotron radiation-based Mössbauer spectroscopy of nickel-based nanoparticles with hexagonal structure

2016 ◽  
Vol 6 (1) ◽  
Author(s):  
Ryo Masuda ◽  
Yasuhiro Kobayashi ◽  
Shinji Kitao ◽  
Masayuki Kurokuzu ◽  
Makina Saito ◽  
...  
Keyword(s):  
Synchrotron Radiation ◽  
Measurement System ◽  
Mössbauer Spectra ◽  
Chemical Reduction ◽  
Resonant Scattering ◽  
Hexagonal Structure ◽  
Mossbauer Spectra ◽  
Hexagonal Close Packed ◽  
Close Proximity ◽  
Internal Conversion Electrons

Abstract We measured the synchrotron-radiation (SR)-based Mössbauer spectra of Ni-based nanoparticles with a hexagonal structure that were synthesised by chemical reduction. To obtain Mössbauer spectra of the nanoparticles without 61Ni enrichment, we developed a measurement system for 61Ni SR-based Mössbauer absorption spectroscopy without X-ray windows between the 61Ni84V16 standard energy alloy and detector. The counting rate of the 61Ni nuclear resonant scattering in the system was enhanced by the detection of internal conversion electrons and the close proximity between the energy standard and the detector. The spectrum measured at 4 K revealed the internal magnetic field of the nanoparticles was 3.4 ± 0.9 T, corresponding to a Ni atomic magnetic moment of 0.3 Bohr magneton. This differs from the value of Ni3C and the theoretically predicted value of hexagonal-close-packed (hcp)-Ni and suggested the nanoparticle possessed intermediate carbon content between hcp-Ni and Ni3C of approximately 10 atomic % of Ni. The improved 61Ni Mössbauer absorption measurement system is also applicable to various Ni materials without 61Ni enrichment, such as Ni hydride nanoparticles.

Autoradiography with Isotopes Emitting Internal Conversion Electrons and Auger Electrons

1964 ◽  
Vol 2 (4) ◽  
pp. 241-262 ◽  
Author(s):  
S. Forberg ◽  
E. Odeblad ◽  
R. Söremark ◽  
S. Ullberg
Keyword(s):  
Internal Conversion ◽  
Auger Electrons ◽  
Conversion Electrons ◽  
Internal Conversion Electrons

scholarly journals SPectrometer for Internal Conversion Electrons (SPICE) at TRIUMF-ISAC

2016 ◽  
Vol 123 ◽  
pp. 04005 ◽  
Author(s):  
J. Smallcombe ◽  
M. Moukaddam ◽  
L. J. Evitts ◽  
A. B. Garnsworthy ◽  
S. Hallam ◽  
...  
Keyword(s):  
Internal Conversion ◽  
Conversion Electrons ◽  
Internal Conversion Electrons

ENERGIES AND HALF-LIVES OF ISOMERIC LEVELS IN THE NUCLEI 139Ce, 141Nd, 161Ho, AND 163Ho

1967 ◽  
Vol 45 (7) ◽  
pp. 2281-2293 ◽  
Author(s):  
J. S. Geiger ◽  
R. L. Graham
Keyword(s):  
Internal Conversion ◽  
Rotational Transition ◽  
Proton Bombardment ◽  
Conversion Electrons ◽  
Transition Energies ◽  
Γ Rays ◽  
Γ Ray ◽  
Internal Conversion Electrons

A search has been made for delayed γ rays with 1 second [Formula: see text] minutes following 10.5-MeV proton bombardment of 18 natural metallic targets. The five activities observed are: (1) 139Ce, Eγ = 754.5 ± 1.3 keV, [Formula: see text] second; (2) 141Nd, Eγ = 756.8 ± 1.3 keV, [Formula: see text] second; (3) 161Ho, Eγ = 211 ± 2 keV, [Formula: see text] second; (4) 163Ho, Eγ = 299 ± 2 keV, [Formula: see text] second; and (5) a γ ray of 122 ± 2 keV, [Formula: see text] second which is tentatively assigned to 179Ta. All transitions have been measured using a Ge(Li) γ-ray detector. The internal conversion electrons of the transitions in 139Ce and 141Nd were also studied using an orange β-ray spectrometer. Rotational transition energies in 158Dy, 164Er, 168Yb, and 174Hf were measured in conjunction with the internal conversion studies and are reported in an Appendix.

Sign in / Sign up

Export Citation Format

Share Document