Hi Hauke,
Thank you for the update on your continuing analysis of the target data.
Do you have any understanding of how the target polarization depends on
the holding magnetic field? I recall that when we measured the tensor
polarization with purely longitudinal magnetic holding field, the value
was very high 80-100%. Is it possible the tensor polarizatino is strongly
dependent on the value of the magnetic holding field?
Richard
On Thu, 13 May 2004, Hauke Kolster wrote:
>
> Hi,
> I took the parameters from my previous calculations and
> caluclated the effect on the polarization for a 600mm
> cell assuming that all parameters can be transfered and
> only the number of wall bounces changes. I did two
> calculations:
>
> 1) Hydrogen target. Here I used the new cell geometry
> to calculate the new distribution of average wall collisions.
> The results are shown in the attached pictures cellpol_3c.jpg
> and cell_3d.jpg for the two cases of high and low wall
> relaxation in the target. The target polarization drops by
> 50% in case of weak wall relaxation/strong recombination and
> by 35% in case of strong wall relaxation/weaker recombination.
>
> 2) Deuterium target. Here I increased the average number
> of wall collisions in the cell by a factor of two to see what
> effect this has on the polarization loss due to the sigma
> transitions 2-6 and 3-5. The results are plotted in attachment
> abspol1n.jpg and show a drop in average vector polarization of
> the vector states of 0.06 and an average drop of the tensor
> polarization of 0.18 in the vector plus and minus states and
> 0.35 for the tensor minus state. The results for the average
> polarizations for the 600mm cell are:
> - Pz(V+,V-) = +/-0.71
> - Pzz(V+,V-) = +0.35
> - Pz(T-) = 0.00
> - Pzz(T-) = -0.68
> This does not include any effect related to molecules.
>
>
> Hauke
>
>
>
>
> -------------------------------------------------------------
> Hauke Kolster MIT * Bldg 26-551 * Cambridge, MA 02139
> kolster@mit.edu Tel (617) 253-2693 Fax (617) 258-5440
> -------------------------------------------------------------
>
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