scholarly journals Longitudinal impedance of a smooth toroidal chamber at low and intermediate frequencies

2003 ◽  
Author(s):  
K.-Y. Ng ◽  
R. Warnock
Keyword(s):  
Longitudinal Impedance ◽  
Toroidal Chamber

scholarly journals Review of the longitudinal impedance budget of the ELETTRA storage ring

2007 ◽  
Author(s):  
G. Penco ◽  
C. Bontoiu ◽  
P. Craievich ◽  
E. Karantzoulis ◽  
V. Forchi
Keyword(s):  
Storage Ring ◽  
Longitudinal Impedance

scholarly journals Longitudinal Impedance Measurements II

1978 ◽  
Author(s):  
Pedersen F. ◽  
E. Raka ◽  
E. Gill
Keyword(s):  
Impedance Measurements ◽  
Longitudinal Impedance

scholarly journals Longitudinal Impedance Measurements VII

1978 ◽  
Author(s):  
Raka E. ◽  
L. Ahrens ◽  
E. Gill
Keyword(s):  
Impedance Measurements ◽  
Longitudinal Impedance

scholarly journals Longitudinal Impedance Measurement at 3 BeV/c

1979 ◽  
Author(s):  
Raka E. ◽  
L. Ahrens ◽  
E. Gill
Keyword(s):  
Impedance Measurement ◽  
Longitudinal Impedance

scholarly journals LONGITUDINAL IMPEDANCE OF THE SQUID GIANT AXON

1941 ◽  
Vol 24 (6) ◽  
pp. 771-788 ◽  
Author(s):  
Kenneth S. Cole ◽  
Richard F. Baker
Keyword(s):  
Sea Water ◽  
Low Frequency ◽  
Giant Axon ◽  
Squid Giant Axon ◽  
Dielectric Characteristics ◽  
Impedance Characteristics ◽  
Longitudinal Impedance ◽  
Electrode Length ◽  
Interpolar Distance ◽  
Inductive Reactance

Longitudinal alternating current impedance measurements have been made on the squid giant axon over the frequency range from 30 cycles per second to 200 kc. per second. Large sea water electrodes were used and the inter-electrode length was immersed in oil. The impedance at high frequency was approximately as predicted theoretically on the basis of the poorly conducting dielectric characteristics of the membrane previously determined. For the large majority of the axons, the impedance reached a maximum at a low frequency and the reactance then vanished at a frequency between 150 and 300 cycles per second. Below this frequency, the reactance was inductive, reaching a maximum and then approaching zero as the frequency was decreased. The inductive reactance is a property of the axon and requires that it contain an inductive structure. The variation of the impedance with interpolar distance indicates that the inductance is in the membrane. The impedance characteristics of the membrane as calculated from the measured longitudinal impedance of the axon may be expressed by an equivalent membrane circuit containing inductance, capacity, and resistance. For a square centimeter of membrane the capacity of 1 µf with dielectric loss is shunted by the series combination of a resistance of 400 ohms and an inductance of one-fifth henry.

scholarly journals Estimation of the longitudinal impedance of the ATF damping ring

2002 ◽  
Author(s):  
M. Takao ◽  
T. Higo ◽  
K. Kanazawa ◽  
H. Nakayama ◽  
J. Urakawa ◽  
...  
Keyword(s):  
Longitudinal Impedance

THE DIFFUSION OF A HIGHLY IONIZED PLASMA ACROSS A MAGNETIC FIELD

1965 ◽  
Vol 43 (5) ◽  
pp. 855-871 ◽  
Author(s):  
O. D. Olson ◽  
H. M. Skarsgard
Keyword(s):  
Magnetic Field ◽  
Electron Density ◽  
Inhomogeneous Magnetic Field ◽  
Experimental Conditions ◽  
Degree Of Ionization ◽  
Coulomb Collisions ◽  
Wide Range ◽  
Small Collection ◽  
Toroidal Chamber ◽  
Good Agreement

The decay of electron density and temperature has been measured in a low-pressure helium afterglow by means of double floating probes of very small collection area. The plasma was contained in a glass toroidal chamber; initial gas pressures were in the vicinity of 0.030 Torr. Magnetic confining fields from 0.004 to 0.0860 Wb/m2 were used and the degree of ionization was such that coulomb collisions were dominant. Strict criteria were adopted to ensure reliable operation of the double probes. A theory of diffusion is presented which includes interactions between all species of particles. Drift effects due to the inhomogeneous magnetic field are important at the higher field strengths and are taken into account. Reasonably good agreement is found between the theoretical and observed time constants for electron-density decay over a wide range of experimental conditions.

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