JEFF-3.3 Thermal Scattering Law (TSL) sublibrary

The JEFF-3.3 thermal neutron scattering sublibrary contains 20 evaluations for 16 materials. Notably, the evaluation for heavy water is updated and now has components for deuterium and oxygen bound in heavy water. Nine new materials (sapphire- Al\(_2\)O\(_3\), silicon, mesitylene, toluene, ortho- and para- hydrogen, ortho- and para-deuterium, and light water ice) have been included in this release. The remaining evaluations are carried forward from JEFF-3.2.

The origin of the new or updated JEFF-3.3 TSL evaluations is summarized below.

Thermal scattering libraries included in JEFF 3.3.
Compound	Eval.	T (K)	Origin
L(o-H\(_2\))	H	14, 15, 16, 17, 18, 19, 20	New
L(p-H\(_2\))	H	14, 15, 16, 17, 18, 19, 20	New
(CH\(_2\))\(_n\)	H	293.6, 350	JEFF-3.2
H\(_2\)O	H	293.6, 323.6, 373.6, 423.6, 473.6, 523.6, 573.6, 623.6, 647.2, 800, 1000	JEFF-3.2
H\(_2\)O ice	H	77, 115, 233, 243, 253, 263, 273	New
Mes.	H	20,120	New
Toluene	H	20,120	New
CaH\(_2\)	Ca, H	293, 400, 500, 600, 700, 800, 1000, 1200	JEFF-3.2
ZrH	H	293.6, 400, 500, 600.0, 700, 800, 1000, 1200	JEFF-3.2
D\(_2\)O	D, O	283.6, 293.6, 300, 323.6, 350, 400, 423.6, 450, 473.6, 500, 523.6, 550, 573.6, 600, 623.6, 650	ENDF/B-VIII
L(o-D\(_2\))	D	19, 20, 21, 22, 23	New
L(p-D\(_2\))	D	19, 20, 21, 22, 23	New
Be	Be	293, 400, 500,600, 700, 800, 1000, 1200	JEFF-3.2
Al\(_2\)O\(_3\)	Al, O	293	New
Mg	Mg	20, 100, 296, 773	JEFF-3.2
Si	Si	296	New
Note:
Al\(_2\)O\(_3\) is for sapphire, L for liquid, o- for ortho-, p- for para-, Mes. for phase II Mesitylene, (CH\(_2\))\(_n\) for polyethylene

This Work

The new JEFF-3.3 TSL evaluations were performed by J.I. Marquez-Damian of Centro Atomico Bariloche (CAB), Argentina.

JEFF-3.3 Main