Add to ORKGThe Superconducting Magnet Instrument for Light Isotopes (SMILI) flew for 19 hours on 1989 September 1 with a residual overburden of 5 g cm-2. It measured the charge, rigidity, and velocity of 30,000 cosmic-ray helium nuclei, with velocity determined by time-of-flight and Cerenkov techniques. Using these data, the flux and isotopic composition of helium as a function of energy were determined. The observed isotopic composition is consistent with that expected from interstellar propagation models inferred from the secondaries of CNO, in contrast to earlier observations which indicated an overabundance of 3He. We discuss constraints that this result places on cosmic-ray transport and solar modulation models
We report new high resolution measurements of the elemental and isotopic composition of galactic co...
Results obtained from a high altitude balloon flight from Thompson, Canada in August, 1973 are repor...
The isotopic and chemical composition of primary cosmic-ray nuclei of a given magnetic rigidity does...
The abundances of cosmic-ray helium isotopes between 0.2 and 3.7 GeV nucleon^(-1) were measured by t...
The abundances of cosmic-ray helium isotopes between 0.2 and 3.7 GeV nucleon^(-1) were measured by ...
We present data from the second flight of the superconducting magnet instrument for light isotopes (...
The balloon-borne Superconducting Magnet Instrument for Light Isotopes flew for the second time on J...
Thesis: Ph. D., Massachusetts Institute of Technology, Department of Physics, 2018.Cataloged from PD...
The rare isotopes ^(2)H and ^(3)He in cosmic rays are believed to originate mainly from the interact...
We have reexamined the implications of a recent measurement of cosmic-ray ^3He at ~6 GeV per nucleon...
The isotopic compositions of galactic cosmic ray boron, carbon, and nitrogen have been measured at e...
The rare isotopes ^2H and ^3He in cosmic rays are believed to originate mainly from the interaction ...
We present a new measurement of the isotopic composition of cosmic ray iron in the energy interval ...
Cosmic ray ^3He/^4He observations, including a new measurement at ~65 MeV/nucleon from ISEE-3, are c...
The variety of isotopes in cosmic rays allows us to study different aspects of the processes that co...
We report new high resolution measurements of the elemental and isotopic composition of galactic co...
Results obtained from a high altitude balloon flight from Thompson, Canada in August, 1973 are repor...
The isotopic and chemical composition of primary cosmic-ray nuclei of a given magnetic rigidity does...
The abundances of cosmic-ray helium isotopes between 0.2 and 3.7 GeV nucleon^(-1) were measured by t...
The abundances of cosmic-ray helium isotopes between 0.2 and 3.7 GeV nucleon^(-1) were measured by ...
We present data from the second flight of the superconducting magnet instrument for light isotopes (...
The balloon-borne Superconducting Magnet Instrument for Light Isotopes flew for the second time on J...
Thesis: Ph. D., Massachusetts Institute of Technology, Department of Physics, 2018.Cataloged from PD...
The rare isotopes ^(2)H and ^(3)He in cosmic rays are believed to originate mainly from the interact...
We have reexamined the implications of a recent measurement of cosmic-ray ^3He at ~6 GeV per nucleon...
The isotopic compositions of galactic cosmic ray boron, carbon, and nitrogen have been measured at e...
The rare isotopes ^2H and ^3He in cosmic rays are believed to originate mainly from the interaction ...
We present a new measurement of the isotopic composition of cosmic ray iron in the energy interval ...
Cosmic ray ^3He/^4He observations, including a new measurement at ~65 MeV/nucleon from ISEE-3, are c...
The variety of isotopes in cosmic rays allows us to study different aspects of the processes that co...
We report new high resolution measurements of the elemental and isotopic composition of galactic co...
Results obtained from a high altitude balloon flight from Thompson, Canada in August, 1973 are repor...
The isotopic and chemical composition of primary cosmic-ray nuclei of a given magnetic rigidity does...