TR-2 Brunellyn Deuterium-Fluoride High-Energy Tactical Laser Systems

## Advantages

### Advantages

-Deuterium-Fluoride Laser allows for unhindered in-atmosphere effectiveness -Zero spread, wind interference, or projectile drop due to lack of a physical projectile for outside forces to act upon-Little to no recoil, equivalent to that of a water gun-Passes almost unhindered through kinetic shields and barriers -Easily melts through most military light-armors. Multiple sustained shots in a single, right location have a similar effect on medium and heavy armor-Devastating effect on unprotected targets-Extremely high temperatures hinder Krogan and Vorcha cellular regeneration The obvious psychological impact of laser weaponry on targetsNo need for reloading thermal clips, only a battery charging port

## Disadvantages

### Disadvantages

-Long-term use restricted by limited life of the SC Li-Ion battery-Puncture of fuel cell can lead to leakage of volatile and toxic Deuterium-Fluoride gas-Lack of kinetic energy contained within a discharge of the Brunellyn results in poor single-shot armor penetration and raw stopping power.-High-frequency hiss produced by discharge, along with the extremely noticeable visible-spectrum laser, combines to make this weapon un-recomendable for covert operations-Condensed deuterium-fluoride is required for the usage of this weapon system. The unique quality of the weapon’s HF tanks, and the rarity of deuterium fluoride in environments natural or otherwise, means that in the event of a shortage, the weapon will almost certainly be rendered useless. Because of the high amount of shots in one tank, this is unlikely.

After being scavenged by a group of unfortunate Osiris crew members, a handful of advanced, dangerous, and mysterious weapons came into the hands of a cluster of GUARDIAN scientists, engineers, and gunsmiths. Following several hours of in-depth research, a drama-filled accusation of treason, subsequently trailed by another few hours of research, the weapons were alleged to be the creations of the brilliantly-dangerous former GUARDIAN engineer, Luxender. In the wake of this revelation, the actual weapon designs were left behind, forgotten by all. All, save for one.

After obtaining permission from Jazzo, Kairalla T’Rez took every manuscript, sketch, and reading about the weapons, down to the least-veritable scraps of data. For the next 168 hours, the sniper lived, breathed, and dreamt Direct-Energy weapons, only sleeping when forced to by one of her bunkmates. She tackled the project with wholesale abandon, sharing all of her ideas with Jazzo. By the end of it all, she was a little bit more than proud of her jockeyed-creation.

The weapon-process begins in an air-tight tank containing two separate mixtures: a mix of ethylene and Nitrogen trifluoride, and a smaller portion containing gaseous deuterium. The Ethyl-Nitrogen Trifluoride is injected into a tiny combustion chamber, where the ethylene is burned, producing a quantity of free excited fluorine radicals. These are emitted in an exhaust stream, into which deuterium gas is injected, further exciting the fluorine particles in tandem with the deuterium particles, until the mixture of both undergoes stimulated emission of photons in the optical resonator. The amount of energy required to force stimulated-emission is a trivial thing for standard lasers, but to effectively work on deuterium-fluoride, a more specialized battery was required. One of relatively appropriate dimensions was “requisitions” from the mining-laser present in the Providence’s cargo bay. After all, what was more useful: Rock samples, or laser-guns?

During stimulated emission, a great deal of photons generated electrically interact with the excited Deuterium-Fluoride atoms. This causes the DF electrons to fall a few energy levels, releasing new photons...except in this reaction, it is more apt to say that the electrons were *thrown* the distance. The absurdly high-energy photons created are then reflected down the length of the optical cavity, creating an extremely-tight beam of photons, purple in coloration when fired. The beam viewed by the eye when the weapon is fire is really no more than an illusion: the laser had actually struck several nanoseconds before, making a shot from the weapon literally impossible to dodge.

All of this is only information on the actual process of creating a laser. That job wasn’t Kaira’s: she needed to figure out a way to get power into the tank without the use of a robot hand, and how to make the weapon safe for organic use. The first solution is already stated above: using a supercapacitor Li-Ion battery, often found in Industrial and Commercial mining lasers (in the case of the prototype, a VolGeo Sample-Cutting laser), a large, effective amount of energy could be stored, already built to work with lasers. The second issue was more of a gunsmithing quandary: the weapon was made for a robot. The trigger, weight balancing, body composition, and overall material of the weapon model needed to be changed, the final issue due to the slightly-uncomfortable amount of static-heat produced by the weapon process, unable to be vented through a heat-sink because of it’s necessity for the weapon. To solve it, she changed the material from what was essentially crude steel to torlon plastic, a soft, strong, heat-reflective material in a snow-white hue. She also rebalanced the stocks to be more fit for organic comfort, adding several layers of padding, and designed ergonomic grips for most of the galaxy’s races, from Turian to Krogan.

Now almost complete, Kaira found herself with three separate designs, all of which had been used in some way by the enemy forces. The S model, a snub-nosed sidearm, was the basic model for the weapon system. It’s receiver was the same, universal copy that would go into both other models. For her modifications to it, Kaira added a standard tactical-rail uplink, ergonomicized the grip, and inserted ports into which standard weapon modifications could be inserted. These came along with the aforementioned material and battery changes. The A model was essentially the S model’s receiver with a longer barrel, and a DMR’s stock, which was obviously ripped off from the mattock. This she changed, shifting it from the hard, narrow design of the mattock stock to the softer, smoother stock of the L-89 Halberd. In order to more completely fill the role of a marksman Rifle, she made the addition of a 2x-4x variable-zoom glass-scope of her own design. The third, P model was a CQC weapon: a laser shotgun. This worked by adding a refracting crystal to the standard mirrored barrel of the weapon, splitting the photon beam into six, equally powered parts. She decided to change the design of the stock to fit more into a hip-fire pattern, which went well with it’s lack of recoil.

When all was said and done, the Asari was left with three weapons, each of them possessing extremely similar strengths and differences. The weapons each had unparalleled and unhindered accuracy, and as long as they weren’t impacting on heavy armors, they packed a devastating punch. Unfortunately, due to a lack of actual kinetic force in the projectile, there was absolutely no stopping-power: the ability to push back an enemy with a shot. For this same reason, it lacked deep-armor penetration. There were a few other issues: the rarity of the ammo, the obvious lack of stealth, and the volatility of its key components were the largest among these. But all in all, Kaira thought that she had created a solid piece of weaponry.

And, a solid piece of weaponry needs a name. It wasn’t long before the Asari came up with the perfect one: Luxender, the original weapon’s creator, was a disgrace to the Hanar within Guardian, a convicted criminal and known drug addict. So, why not go the opposite direction? She had personally known another Hanar: one that was kind, good, loyal to Guardian. A leader through thick and thin. His name was Brunellyn.

In the years following the Reaper war, the basic design of the TR-2 line of weaponry was very rapidly regulated by the Citadel High Commission on Deadly Weapons Manufacturing, and restricted to very limited production and use. These days, it can most often be found in the hands of a select few Asari specialists who prefer its unique applications or former GUARDIAN operatives who picked it up... though Kaira can still be persuaded to offer a commission through her and Marcus' company.