Atomic and nuclear properties of yttrium bromide (YBr₃)

Quantity	Value	Units	Value	Units
<Z/A>	0.43820
Specific gravity	5.290	g cm-3
Mean excitation energy	410.0	eV
Minimum ionization	1.356	MeV g-1cm2	7.176	MeV cm-1
Nuclear collision length	89.6	g cm-2	16.93	cm
Nuclear interaction length	148.5	g cm-2	28.08	cm
Pion collision length	114.4	g cm-2	21.62	cm
Pion interaction length	176.8	g cm-2	33.42	cm
Radiation length	11.13	g cm-2	2.104	cm
Critical energy	16.42	MeV (for e-)	15.90	MeV (for e+)
Molière radius	14.37	g cm-2	2.717	cm
Plasma energy ℏωp	43.87	eV
Muon critical energy	270.	GeV

Composition:

Elem	Z	Atomic frac*	Mass frac
Y	39	1.00	0.270545
Br	35	3.00	0.729455
* calculated from mass fraction data

For muons, dE/dx = a(E) + b(E) E. Tables of b(E): PDF TEXT
Table of muon dE/dx and Range: PDF TEXT
Explanation of some entries
Note: Ieff calculated using the ICRU37 algorithm given in Table 5.1