MAGNETIC FIELD EFFECT ON THE RESONANCE ABSORPTION OF $gamma$ RAYS

Journal Article · Thu Sep 01 04:00:00 EDT 1960 · Izvest. Akad. Nauk S.S.S.R., Ser. Fiz.

OSTI ID:4070372

Lyubimov, V A; Alikhanov, A I

The influence of a magnetic field on the resonance emission and absorption without recoil was sthudied utilizing the Zeeman effect in the gamma transition of Sn/sup 119//sup */ with energy 23.8 kev and lifetime 2.67 x 10/sup -8/ sec (the Sn/sup 119//sup */ gamma ray em ission is 23.8 kev and x ray 25 kev). A krypton and propanefilled proportional counter was used for recording the gamma ray pulses of 20 to 30 kev. A strong drop (15%) in soft radiation intensity was observed with the cooling of the source down to lOO deg K. Measurements were also made of the effect of filter thickness on the reduced intensity at lOO deg K. With cooled source and absorber the intensity of the soft emission rises with the increase of the magnetic field. The magnetic field, by splitting the 23.8-kev level, shifts the emission energy without recoil from resonance energy with an order of magnitude of 10/sup -7/ ev while the shift of the 23.8-kev level in a weaker magnetic field is considerably smaller. This results in reduced absorption in the absorber and an increase in intensities. (R.V.J.)

• Research Organization: Inst. of Theoretical and Experimental Physics, the Academy of Sciences, U.S.S.R.
• NSA Number: NSA-15-012110
• OSTI ID: 4070372
• Journal Information: Izvest. Akad. Nauk S.S.S.R., Ser. Fiz., Journal Name: Izvest. Akad. Nauk S.S.S.R., Ser. Fiz. Vol. Vol: 24
• Country of Publication: Country unknown/Code not available
• Language: Russian

Related Subjects

ABSORPTION
COOLING
EFFICIENCY
ENERGY LEVELS
EXCITATION
FILTERS
GAMMA DETECTION
GAMMA RADIATION
GAMMA SOURCES
GASES
HALF-LIFE
KRYPTON
LOW TEMPERATURE
MAGNETIC FIELDS
MEASURED VALUES
PHOTONS
PHYSICS
PROPANE
PROPORTIONAL COUNTERS
PULSES
RECOILS
RESONANCE
SPECTRA
SPECTRAL SHIFT
THICKNESS
TIN 119
X RADIATION
ZEEMAN EFFECT