Japan Charged-Particle Nuclear Reaction Data Group
Division of Physics, Graduate School of Science
Hokkaido University
060-0810 Sapporo, JAPANE-mail: services@jcprg.org
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Memo CP-E/067
Date:
To:
From:
Subject:
Reference:

March 24, 2005
Distribution
OTSUKA Naohiko
Polarization quantities
CP-E/064, CP-C/353 (Rev.), CP-D/320

1) Expansion of branch LL, LS, NN, SL, SS and NL
I propose corrections of expansions for branch codes LL, LS, NN, SL, SS and NL (as acomplement of CP-E/064).
Dictionary 31 (Branch codes)
LL
Longitudinal-longitudinal (zz) component
LS
Longitudinal-sideward (zx) component
NN
Normal-normal (yy) component
SL
Sideward-longitudinal (xz) component
SS
Sideward-sideward (xx) component
NL
Normal-longitudinal (yz) component (Proposed in CP-C/353, see below)2) Spin correlation parameter or tensor analyzing power?
CP-C/353 Rev. proposed “NL,POL/DA,,ANA” with “spin correlation parameter A(NL)”.
We have similar codes “ij,POL/DA,,ANA” (i, j=S, N, L). These are expanded as “spincorrelation parameter A(ij)”, however often applied to “tensor analyzing power”. We must
distinguish between these two quantities.
CP-C/353 is prepared for “D.L. Adams et al., Nucl. Phys. A480 (1988)530” (=C0786 inTRANS.C071) which measures “spin correlation parameter”. Therefore the proposed expansion
is correct for this reference. I am not against the addition of “NL,POL/DA,,ANA” with “spincorrelation parameter A(NL)” into dictionary 36 as a temporally step in order to keep
consistency with other similar codes. However investigation into existing entries and update ofLEXFOR entry are necessary. Use of “ANA” for “spin correlation parameter” may be misleading.
We have good LEXFOR entry for polarization quantities. However sometimes compilers
specify quantity codes by symbols used in articles. Compilers should specify quantity codes notby symbols but by definitions, because there may be various notations for one quantity (as shownin Table 1).

Table 1: Typical polarization quantities and corresponding EXFOR quantity codes
Typical symbol 2)
EXFOR code (for d/dA)
QuantitySetup1)→
Polarization,POL/DA …
Py
A(b,c)D→A(b,c)D*)
Vector analyzing power(spin ≥ 1/2)→

A(b,c)D→A(b,c)D*)
Tensor analyzing power(spin ≥1, deuteron etc.)→

A(b,c)DAy, A00n0, …
iT11, …
A000n, …

,POL/DA,,ANA …
,POL/DA,,VAP …

Ayy, …
T20, …

NN,POL/DA,,ANA (!)…
20,POL/DA,,TAP …

→A(b,c)D*)→ →Initial state spin correlation A(b,c)DParameter→ →Final state spin correlation
A(b,c)D*)Parameter
Spin rotation-depolarization A(b→,c→)Dparameter→→A(b,c)D*)Spin transfer parameter→→A(b, c )D*)

Ayy, ANN, Ann, CNN, NN,POL/DA,,ANA (!)…
Cy,y, A00nn ,…
Cnn, CNN,Cnn00 , …

Cn,n, NN,POL/DA,,C …

D, DNN, Kyy’, Dn0n0, NN,POL/DA,,D …
…
DNN, D0n0n, …
Kn00n, …

→→
NN,POL/DA,,K …
A(b,c) D*) Dt, KNN, K0nn0, …
*) Rarely measured 2) y or yy component for the most part. Bold means “often used”.

1)→A : Polarized target used (POLTR in INC-SOURCE)→b : Polarized beam used (POLNS or POLIS in INC-SOURCE)→

c : Polarization of detected outgoing particle and measured (DSCAT in METHOD)→

D : Polarization of detected recoil measured (DSCAT in METHOD)
Distribution:
S. Babykina, CAJaD
S. Dunaeva, NDS
H. Henriksson, NEA-DB
S. Maev, CJD
C. Nordborg, NEA-DB
O. Schwerer, NDS
V. Varlamov, CDFE
V. Zerkin, NDS

J.H. Chang, KAERI
Z.G. Ge, CNDC
A. Kaltchenko, KINR
V.N. Manokhin, CJD
P. Obložinský, NNDC
S. Tákacs, ATOMKI
M. Vlasov, KINR
Y.X. Zhuang, CNDC

M. Chiba, JCPRG
O. Gritzay, KINR
K. Katō, JCPRG
V. McLane, NNDC
A. Ohnishi, JCPRG
S. Taova, VNIIEF
M. Wirtz, NDS
EXFOR, NEA-DB

F.E. Chukreev, CAJaD
A. Hasegawa, JAERI
M. Lammer, NDS
M. Mikhaylyukova, CJD
D. Rochman, NNDC
T. Tárkányi, ATOMKI
H.W. Yu, CNDC
JCPRG Distribution